It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 131 402 is not a prime number.
For example, 131 402 can be divided by 2: 131 402 / 2 = 65 701.
For 131 402 to be a prime number, it would have been required that 131 402 has only two divisors, i.e., itself and 1.
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131 402 is an even number, because it is evenly divisible by 2: 131 402 / 2 = 65 701.
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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 131 402 is about 362.494.
Thus, the square root of 131 402 is not an integer, and therefore 131 402 is not a square number.
The square of a number (here 131 402) is the result of the product of this number (131 402) by itself (i.e., 131 402 × 131 402); the square of 131 402 is sometimes called "raising 131 402 to the power 2", or "131 402 squared".
The square of 131 402 is 17 266 485 604 because 131 402 × 131 402 = 131 4022 = 17 266 485 604.
As a consequence, 131 402 is the square root of 17 266 485 604.
The multiples of 131 402 are all integers evenly divisible by 131 402, that is all numbers such that the remainder of the division by 131 402 is zero. There are infinitely many multiples of 131 402. The smallest multiples of 131 402 are: