Is 31791 a prime number?

31 791 is an odd number, because it is not evenly divisible by 2.

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• What is an even number?

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 31 791 is about 178.300.

Thus, the square root of 31 791 is not an integer, and therefore 31 791 is not a square number.

The square of a number (here 31 791) is the result of the product of this number (31 791) by itself (i.e., 31 791 × 31 791); the square of 31 791 is sometimes called "raising 31 791 to the power 2", or "31 791 squared".

The square of 31 791 is 1 010 667 681 because 31 791 × 31 791 = 31 791² = 1 010 667 681.

As a consequence, 31 791 is the square root of 1 010 667 681.

31 791 is a number with 5 digits.

The multiples of 31 791 are all integers evenly divisible by 31 791, that is all numbers such that the remainder of the division by 31 791 is zero. There are infinitely many multiples of 31 791. The smallest multiples of 31 791 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 31 791 too, since 0 × 31 791 = 0
• 31 791: indeed, 31 791 is a multiple of itself, since 31 791 is evenly divisible by 31 791 (we have 31 791 / 31 791 = 1, so the remainder of this division is indeed zero)
• 63 582: indeed, 63 582 = 31 791 × 2
• 95 373: indeed, 95 373 = 31 791 × 3
• 127 164: indeed, 127 164 = 31 791 × 4
• 158 955: indeed, 158 955 = 31 791 × 5
• etc.

• Preceding numbers: …31 789, 31 790
• Following numbers: 31 792, 31 793…

Nearest numbers from 31 791

• Preceding prime number: 31 771
• Following prime number: 31 793

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• 31 791 est-il un nombre premier ?