56120031 has 24 divisors (see below), whose sum is σ = 90494976. Its totient is φ = 33218640.

The previous prime is 56120011. The next prime is 56120039. The reversal of 56120031 is 13002165.

It is not a de Polignac number, because 56120031 - 2⁶ = 56119967 is a prime.

It is a super-2 number, since 2×56120031² = 6298915758881922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56119986 and 56120013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56120039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2335 + ... + 10848.

It is an arithmetic number, because the mean of its divisors is an integer number (3770624).

Almost surely, 2^56120031 is an apocalyptic number.

56120031 is a deficient number, since it is larger than the sum of its proper divisors (34374945).

56120031 is a wasteful number, since it uses less digits than its factorization.

56120031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13243 (or 13240 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 56120031 is about 7491.3303891899. The cubic root of 56120031 is about 382.8593879683.

Adding to 56120031 its reverse (13002165), we get a palindrome (69122196).

The spelling of 56120031 in words is "fifty-six million, one hundred twenty thousand, thirty-one".