It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 340 331 is not a prime number.
For example, 340 331 can be divided by 23: 340 331 / 23 = 14 797.
For 340 331 to be a prime number, it would have been required that 340 331 has only two divisors, i.e., itself and 1.
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340 331 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 340 331 is about 583.379.
Thus, the square root of 340 331 is not an integer, and therefore 340 331 is not a square number.
The square of a number (here 340 331) is the result of the product of this number (340 331) by itself (i.e., 340 331 × 340 331); the square of 340 331 is sometimes called "raising 340 331 to the power 2", or "340 331 squared".
The square of 340 331 is 115 825 189 561 because 340 331 × 340 331 = 340 3312 = 115 825 189 561.
As a consequence, 340 331 is the square root of 115 825 189 561.
The multiples of 340 331 are all integers evenly divisible by 340 331, that is all numbers such that the remainder of the division by 340 331 is zero. There are infinitely many multiples of 340 331. The smallest multiples of 340 331 are: