56317631 has 6 divisors (see below), whose sum is σ = 56860440. Its totient is φ = 55779956.

The previous prime is 56317601. The next prime is 56317633. The reversal of 56317631 is 13671365.

It is not a de Polignac number, because 56317631 - 2¹⁰ = 56316607 is a prime.

It is a super-2 number, since 2×56317631² = 6343351122904322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56317633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8990 + ... + 13908.

It is an arithmetic number, because the mean of its divisors is an integer number (9476740).

Almost surely, 2^56317631 is an apocalyptic number.

56317631 is a deficient number, since it is larger than the sum of its proper divisors (542809).

56317631 is an equidigital number, since it uses as much as digits as its factorization.

56317631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133 (or 5026 counting only the distinct ones).

The product of its digits is 11340, while the sum is 32.

The square root of 56317631 is about 7504.5073789024. The cubic root of 56317631 is about 383.3082140230.

Adding to 56317631 its reverse (13671365), we get a palindrome (69988996).

The spelling of 56317631 in words is "fifty-six million, three hundred seventeen thousand, six hundred thirty-one".