Is 1131 a prime number?

1 131 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 1 131 is about 33.630.

Thus, the square root of 1 131 is not an integer, and therefore 1 131 is not a square number.

The square of a number (here 1 131) is the result of the product of this number (1 131) by itself (i.e., 1 131 × 1 131); the square of 1 131 is sometimes called "raising 1 131 to the power 2", or "1 131 squared".

The square of 1 131 is 1 279 161 because 1 131 × 1 131 = 1 131² = 1 279 161.

As a consequence, 1 131 is the square root of 1 279 161.

1 131 is a number with 4 digits.

The multiples of 1 131 are all integers evenly divisible by 1 131, that is all numbers such that the remainder of the division by 1 131 is zero. There are infinitely many multiples of 1 131. The smallest multiples of 1 131 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 1 131 too, since 0 × 1 131 = 0
• 1 131: indeed, 1 131 is a multiple of itself, since 1 131 is evenly divisible by 1 131 (we have 1 131 / 1 131 = 1, so the remainder of this division is indeed zero)
• 2 262: indeed, 2 262 = 1 131 × 2
• 3 393: indeed, 3 393 = 1 131 × 3
• 4 524: indeed, 4 524 = 1 131 × 4
• 5 655: indeed, 5 655 = 1 131 × 5
• etc.

• Preceding numbers: …1 129, 1 130
• Following numbers: 1 132, 1 133…

Nearest numbers from 1 131

• Preceding prime number: 1 129
• Following prime number: 1 151

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• 1 131 est-il un nombre premier ?