It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 343 109 is not a prime number.
For example, 343 109 can be divided by 13: 343 109 / 13 = 26 393.
For 343 109 to be a prime number, it would have been required that 343 109 has only two divisors, i.e., itself and 1.
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343 109 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 343 109 is about 585.755.
Thus, the square root of 343 109 is not an integer, and therefore 343 109 is not a square number.
The square of a number (here 343 109) is the result of the product of this number (343 109) by itself (i.e., 343 109 × 343 109); the square of 343 109 is sometimes called "raising 343 109 to the power 2", or "343 109 squared".
The square of 343 109 is 117 723 785 881 because 343 109 × 343 109 = 343 1092 = 117 723 785 881.
As a consequence, 343 109 is the square root of 117 723 785 881.
The multiples of 343 109 are all integers evenly divisible by 343 109, that is all numbers such that the remainder of the division by 343 109 is zero. There are infinitely many multiples of 343 109. The smallest multiples of 343 109 are: