56823231 has 16 divisors (see below), whose sum is σ = 82391904. Its totient is φ = 34689024.

The previous prime is 56823223. The next prime is 56823241. The reversal of 56823231 is 13232865.

It is not a de Polignac number, because 56823231 - 2³ = 56823223 is a prime.

It is a super-2 number, since 2×56823231² = 6457759162558722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56823241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13170 + ... + 16943.

It is an arithmetic number, because the mean of its divisors is an integer number (5149494).

Almost surely, 2^56823231 is an apocalyptic number.

56823231 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

56823231 is a deficient number, since it is larger than the sum of its proper divisors (25568673).

56823231 is a wasteful number, since it uses less digits than its factorization.

56823231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30170.

The product of its digits is 8640, while the sum is 30.

The square root of 56823231 is about 7538.1185318354. The cubic root of 56823231 is about 384.4518674216.

The spelling of 56823231 in words is "fifty-six million, eight hundred twenty-three thousand, two hundred thirty-one".