Is 131221021 a prime number?

131 221 021 is an odd number, because it is not evenly divisible by 2.

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• What is an even number?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 131 221 021 is about 11 455.174.

Thus, the square root of 131 221 021 is not an integer, and therefore 131 221 021 is not a square number.

Anyway, 131 221 021 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 131 221 021) is the result of the product of this number (131 221 021) by itself (i.e., 131 221 021 × 131 221 021); the square of 131 221 021 is sometimes called "raising 131 221 021 to the power 2", or "131 221 021 squared".

The square of 131 221 021 is 17 218 956 352 282 440 because 131 221 021 × 131 221 021 = 131 221 021² = 17 218 956 352 282 440.

As a consequence, 131 221 021 is the square root of 17 218 956 352 282 440.

131 221 021 is a number with 9 digits.

The multiples of 131 221 021 are all integers evenly divisible by 131 221 021, that is all numbers such that the remainder of the division by 131 221 021 is zero. There are infinitely many multiples of 131 221 021. The smallest multiples of 131 221 021 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 131 221 021 too, since 0 × 131 221 021 = 0
• 131 221 021: indeed, 131 221 021 is a multiple of itself, since 131 221 021 is evenly divisible by 131 221 021 (we have 131 221 021 / 131 221 021 = 1, so the remainder of this division is indeed zero)
• 262 442 042: indeed, 262 442 042 = 131 221 021 × 2
• 393 663 063: indeed, 393 663 063 = 131 221 021 × 3
• 524 884 084: indeed, 524 884 084 = 131 221 021 × 4
• 656 105 105: indeed, 656 105 105 = 131 221 021 × 5
• etc.

• Preceding numbers: …131 221 019, 131 221 020
• Following numbers: 131 221 022, 131 221 023…

Nearest numbers from 131 221 021

• Preceding prime number: 131 221 009
• Following prime number: 131 221 037

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• 131 221 021 est-il un nombre premier ?