It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 231 is not a prime number.
For example, 240 231 can be divided by 3: 240 231 / 3 = 80 077.
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For 240 231 to be a prime number, it would have been required that 240 231 has only two divisors, i.e., itself and 1.
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240 231 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 240 231 is about 490.134.
Thus, the square root of 240 231 is not an integer, and therefore 240 231 is not a square number.
The square of a number (here 240 231) is the result of the product of this number (240 231) by itself (i.e., 240 231 × 240 231); the square of 240 231 is sometimes called "raising 240 231 to the power 2", or "240 231 squared".
The square of 240 231 is 57 710 933 361 because 240 231 × 240 231 = 240 2312 = 57 710 933 361.
As a consequence, 240 231 is the square root of 57 710 933 361.
The multiples of 240 231 are all integers evenly divisible by 240 231, that is all numbers such that the remainder of the division by 240 231 is zero. There are infinitely many multiples of 240 231. The smallest multiples of 240 231 are: