It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 997 831 is not a prime number.
For example, 997 831 can be divided by 53: 997 831 / 53 = 18 827.
For 997 831 to be a prime number, it would have been required that 997 831 has only two divisors, i.e., itself and 1.
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997 831 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 997 831 is about 998.915.
Thus, the square root of 997 831 is not an integer, and therefore 997 831 is not a square number.
The square of a number (here 997 831) is the result of the product of this number (997 831) by itself (i.e., 997 831 × 997 831); the square of 997 831 is sometimes called "raising 997 831 to the power 2", or "997 831 squared".
The square of 997 831 is 995 666 704 561 because 997 831 × 997 831 = 997 8312 = 995 666 704 561.
As a consequence, 997 831 is the square root of 995 666 704 561.
The multiples of 997 831 are all integers evenly divisible by 997 831, that is all numbers such that the remainder of the division by 997 831 is zero. There are infinitely many multiples of 997 831. The smallest multiples of 997 831 are: