It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 300 272 018 is not a prime number.
For example, 300 272 018 can be divided by 2: 300 272 018 / 2 = 150 136 009.
For 300 272 018 to be a prime number, it would have been required that 300 272 018 has only two divisors, i.e., itself and 1.
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300 272 018 is an even number, because it is evenly divisible by 2: 300 272 018 / 2 = 150 136 009.
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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 300 272 018 is about 17 328.359.
Thus, the square root of 300 272 018 is not an integer, and therefore 300 272 018 is not a square number.
The square of a number (here 300 272 018) is the result of the product of this number (300 272 018) by itself (i.e., 300 272 018 × 300 272 018); the square of 300 272 018 is sometimes called "raising 300 272 018 to the power 2", or "300 272 018 squared".
The square of 300 272 018 is 90 163 284 793 792 320 because 300 272 018 × 300 272 018 = 300 272 0182 = 90 163 284 793 792 320.
As a consequence, 300 272 018 is the square root of 90 163 284 793 792 320.
300 272 018 is a number with 9 digits.
The multiples of 300 272 018 are all integers evenly divisible by 300 272 018, that is all numbers such that the remainder of the division by 300 272 018 is zero. There are infinitely many multiples of 300 272 018. The smallest multiples of 300 272 018 are: