It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 133 518 023 is not a prime number.
For example, 133 518 023 can be divided by 31: 133 518 023 / 31 = 4 307 033.
For 133 518 023 to be a prime number, it would have been required that 133 518 023 has only two divisors, i.e., itself and 1.
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133 518 023 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 133 518 023 is about 11 555.000.
Thus, the square root of 133 518 023 is not an integer, and therefore 133 518 023 is not a square number.
The square of a number (here 133 518 023) is the result of the product of this number (133 518 023) by itself (i.e., 133 518 023 × 133 518 023); the square of 133 518 023 is sometimes called "raising 133 518 023 to the power 2", or "133 518 023 squared".
The square of 133 518 023 is 17 827 062 465 828 528 because 133 518 023 × 133 518 023 = 133 518 0232 = 17 827 062 465 828 528.
As a consequence, 133 518 023 is the square root of 17 827 062 465 828 528.
133 518 023 is a number with 9 digits.
The multiples of 133 518 023 are all integers evenly divisible by 133 518 023, that is all numbers such that the remainder of the division by 133 518 023 is zero. There are infinitely many multiples of 133 518 023. The smallest multiples of 133 518 023 are: