It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 324 016 is not a prime number.
For example, 324 016 can be divided by 2: 324 016 / 2 = 162 008.
For 324 016 to be a prime number, it would have been required that 324 016 has only two divisors, i.e., itself and 1.
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324 016 is an even number, because it is evenly divisible by 2: 324 016 / 2 = 162 008.
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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 324 016 is about 569.224.
Thus, the square root of 324 016 is not an integer, and therefore 324 016 is not a square number.
The square of a number (here 324 016) is the result of the product of this number (324 016) by itself (i.e., 324 016 × 324 016); the square of 324 016 is sometimes called "raising 324 016 to the power 2", or "324 016 squared".
The square of 324 016 is 104 986 368 256 because 324 016 × 324 016 = 324 0162 = 104 986 368 256.
As a consequence, 324 016 is the square root of 104 986 368 256.
The multiples of 324 016 are all integers evenly divisible by 324 016, that is all numbers such that the remainder of the division by 324 016 is zero. There are infinitely many multiples of 324 016. The smallest multiples of 324 016 are: