56118231 has 32 divisors (see below), whose sum is σ = 91035840. Its totient is φ = 33955200.

The previous prime is 56118221. The next prime is 56118247. The reversal of 56118231 is 13281165.

It is not a de Polignac number, because 56118231 - 2¹⁷ = 55987159 is a prime.

It is a super-2 number, since 2×56118231² = 6298511701138722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 56118195 and 56118204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56118221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20101 + ... + 22721.

It is an arithmetic number, because the mean of its divisors is an integer number (2844870).

Almost surely, 2^56118231 is an apocalyptic number.

56118231 is a deficient number, since it is larger than the sum of its proper divisors (34917609).

56118231 is a wasteful number, since it uses less digits than its factorization.

56118231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704 (or 2698 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 56118231 is about 7491.2102493522. The cubic root of 56118231 is about 382.8552946333.

Adding to 56118231 its reverse (13281165), we get a palindrome (69399396).

The spelling of 56118231 in words is "fifty-six million, one hundred eighteen thousand, two hundred thirty-one".