It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 671 113 013 is not a prime number.
For example, 671 113 013 can be divided by 613: 671 113 013 / 613 = 1 094 801.
For 671 113 013 to be a prime number, it would have been required that 671 113 013 has only two divisors, i.e., itself and 1.
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671 113 013 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 671 113 013 is about 25 905.849.
Thus, the square root of 671 113 013 is not an integer, and therefore 671 113 013 is not a square number.
The square of a number (here 671 113 013) is the result of the product of this number (671 113 013) by itself (i.e., 671 113 013 × 671 113 013); the square of 671 113 013 is sometimes called "raising 671 113 013 to the power 2", or "671 113 013 squared".
The square of 671 113 013 is 450 392 676 217 938 176 because 671 113 013 × 671 113 013 = 671 113 0132 = 450 392 676 217 938 176.
As a consequence, 671 113 013 is the square root of 450 392 676 217 938 176.
671 113 013 is a number with 9 digits.
The multiples of 671 113 013 are all integers evenly divisible by 671 113 013, that is all numbers such that the remainder of the division by 671 113 013 is zero. There are infinitely many multiples of 671 113 013. The smallest multiples of 671 113 013 are: