It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 115 397 is not a prime number.
For example, 115 397 can be divided by 167: 115 397 / 167 = 691.
For 115 397 to be a prime number, it would have been required that 115 397 has only two divisors, i.e., itself and 1.
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115 397 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 115 397 is about 339.701.
Thus, the square root of 115 397 is not an integer, and therefore 115 397 is not a square number.
The square of a number (here 115 397) is the result of the product of this number (115 397) by itself (i.e., 115 397 × 115 397); the square of 115 397 is sometimes called "raising 115 397 to the power 2", or "115 397 squared".
The square of 115 397 is 13 316 467 609 because 115 397 × 115 397 = 115 3972 = 13 316 467 609.
As a consequence, 115 397 is the square root of 13 316 467 609.
The multiples of 115 397 are all integers evenly divisible by 115 397, that is all numbers such that the remainder of the division by 115 397 is zero. There are infinitely many multiples of 115 397. The smallest multiples of 115 397 are: