57631131 has 12 divisors (see below), whose sum is σ = 83555680. Its totient is φ = 38277360.

The previous prime is 57631129. The next prime is 57631157. The reversal of 57631131 is 13113675.

It is not a de Polignac number, because 57631131 - 2¹ = 57631129 is a prime.

It is a super-2 number, since 2×57631131² = 6642694520678322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57631095 and 57631104.

It is not an unprimeable number, because it can be changed into a prime (57631121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9376 + ... + 14253.

Almost surely, 2^57631131 is an apocalyptic number.

57631131 is a deficient number, since it is larger than the sum of its proper divisors (25924549).

57631131 is a wasteful number, since it uses less digits than its factorization.

57631131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23906 (or 23903 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 57631131 is about 7591.5170420674. The cubic root of 57631131 is about 386.2653168903.

The spelling of 57631131 in words is "fifty-seven million, six hundred thirty-one thousand, one hundred thirty-one".