It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 431 is not a prime number.
For example, 490 431 can be divided by 3: 490 431 / 3 = 163 477.
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For 490 431 to be a prime number, it would have been required that 490 431 has only two divisors, i.e., itself and 1.
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490 431 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 490 431 is about 700.308.
Thus, the square root of 490 431 is not an integer, and therefore 490 431 is not a square number.
The square of a number (here 490 431) is the result of the product of this number (490 431) by itself (i.e., 490 431 × 490 431); the square of 490 431 is sometimes called "raising 490 431 to the power 2", or "490 431 squared".
The square of 490 431 is 240 522 565 761 because 490 431 × 490 431 = 490 4312 = 240 522 565 761.
As a consequence, 490 431 is the square root of 240 522 565 761.
The multiples of 490 431 are all integers evenly divisible by 490 431, that is all numbers such that the remainder of the division by 490 431 is zero. There are infinitely many multiples of 490 431. The smallest multiples of 490 431 are: