3131631137 has 2 divisors, whose sum is σ = 3131631138. Its totient is φ = 3131631136.

The previous prime is 3131631119. The next prime is 3131631169. The reversal of 3131631137 is 7311361313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2322854416 + 808776721 = 48196^2 + 28439^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131631137 - 2¹⁴ = 3131614753 is a prime.

It is a super-2 number, since 2×3131631137² = 19614227156455825538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3131651137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565815568 + 1565815569.

It is an arithmetic number, because the mean of its divisors is an integer number (1565815569).

Almost surely, 2^3131631137 is an apocalyptic number.

It is an amenable number.

3131631137 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131631137 is an equidigital number, since it uses as much as digits as its factorization.

3131631137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 29.

The square root of 3131631137 is about 55960.9786994473. The cubic root of 3131631137 is about 1463.0422485042.

The spelling of 3131631137 in words is "three billion, one hundred thirty-one million, six hundred thirty-one thousand, one hundred thirty-seven".