It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 831 is not a prime number.
For example, 490 831 can be divided by 11: 490 831 / 11 = 44 621.
For 490 831 to be a prime number, it would have been required that 490 831 has only two divisors, i.e., itself and 1.
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490 831 is an odd number, because it is not evenly divisible by 2.
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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 490 831 is about 700.593.
Thus, the square root of 490 831 is not an integer, and therefore 490 831 is not a square number.
The square of a number (here 490 831) is the result of the product of this number (490 831) by itself (i.e., 490 831 × 490 831); the square of 490 831 is sometimes called "raising 490 831 to the power 2", or "490 831 squared".
The square of 490 831 is 240 915 070 561 because 490 831 × 490 831 = 490 8312 = 240 915 070 561.
As a consequence, 490 831 is the square root of 240 915 070 561.
The multiples of 490 831 are all integers evenly divisible by 490 831, that is all numbers such that the remainder of the division by 490 831 is zero. There are infinitely many multiples of 490 831. The smallest multiples of 490 831 are: