6831131 has 2 divisors, whose sum is σ = 6831132. Its totient is φ = 6831130.

The previous prime is 6831113. The next prime is 6831151. The reversal of 6831131 is 1311386.

Together with previous prime (6831113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6831131 is a prime.

It is a super-2 number, since 2×6831131² = 93328701478322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6831097 and 6831106.

It is not a weakly prime, because it can be changed into another prime (6831151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3415565 + 3415566.

It is an arithmetic number, because the mean of its divisors is an integer number (3415566).

Almost surely, 2^6831131 is an apocalyptic number.

6831131 is a deficient number, since it is larger than the sum of its proper divisors (1).

6831131 is an equidigital number, since it uses as much as digits as its factorization.

6831131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

The square root of 6831131 is about 2613.6432426787. The cubic root of 6831131 is about 189.7423192009.

The spelling of 6831131 in words is "six million, eight hundred thirty-one thousand, one hundred thirty-one".