It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 324 518 is not a prime number.
For example, 324 518 can be divided by 2: 324 518 / 2 = 162 259.
For 324 518 to be a prime number, it would have been required that 324 518 has only two divisors, i.e., itself and 1.
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324 518 is an even number, because it is evenly divisible by 2: 324 518 / 2 = 162 259.
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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 324 518 is about 569.665.
Thus, the square root of 324 518 is not an integer, and therefore 324 518 is not a square number.
The square of a number (here 324 518) is the result of the product of this number (324 518) by itself (i.e., 324 518 × 324 518); the square of 324 518 is sometimes called "raising 324 518 to the power 2", or "324 518 squared".
The square of 324 518 is 105 311 932 324 because 324 518 × 324 518 = 324 5182 = 105 311 932 324.
As a consequence, 324 518 is the square root of 105 311 932 324.
The multiples of 324 518 are all integers evenly divisible by 324 518, that is all numbers such that the remainder of the division by 324 518 is zero. There are infinitely many multiples of 324 518. The smallest multiples of 324 518 are: