It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 998 731 is not a prime number.
For example, 998 731 can be divided by 29: 998 731 / 29 = 34 439.
For 998 731 to be a prime number, it would have been required that 998 731 has only two divisors, i.e., itself and 1.
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998 731 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 998 731 is about 999.365.
Thus, the square root of 998 731 is not an integer, and therefore 998 731 is not a square number.
The square of a number (here 998 731) is the result of the product of this number (998 731) by itself (i.e., 998 731 × 998 731); the square of 998 731 is sometimes called "raising 998 731 to the power 2", or "998 731 squared".
The square of 998 731 is 997 463 610 361 because 998 731 × 998 731 = 998 7312 = 997 463 610 361.
As a consequence, 998 731 is the square root of 997 463 610 361.
The multiples of 998 731 are all integers evenly divisible by 998 731, that is all numbers such that the remainder of the division by 998 731 is zero. There are infinitely many multiples of 998 731. The smallest multiples of 998 731 are: