It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 331 is not a prime number.
For example, 240 331 can be divided by 7: 240 331 / 7 = 34 333.
For 240 331 to be a prime number, it would have been required that 240 331 has only two divisors, i.e., itself and 1.
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240 331 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 240 331 is about 490.236.
Thus, the square root of 240 331 is not an integer, and therefore 240 331 is not a square number.
The square of a number (here 240 331) is the result of the product of this number (240 331) by itself (i.e., 240 331 × 240 331); the square of 240 331 is sometimes called "raising 240 331 to the power 2", or "240 331 squared".
The square of 240 331 is 57 758 989 561 because 240 331 × 240 331 = 240 3312 = 57 758 989 561.
As a consequence, 240 331 is the square root of 57 758 989 561.
The multiples of 240 331 are all integers evenly divisible by 240 331, that is all numbers such that the remainder of the division by 240 331 is zero. There are infinitely many multiples of 240 331. The smallest multiples of 240 331 are: