56123631 has 16 divisors (see below), whose sum is σ = 83589120. Its totient is φ = 37216440.

The previous prime is 56123623. The next prime is 56123659. The reversal of 56123631 is 13632165.

56123631 is a `hidden beast` number, since 5 + 6 + 1 + 23 + 631 = 666.

It is not a de Polignac number, because 56123631 - 2³ = 56123623 is a prime.

It is a super-2 number, since 2×56123631² = 6299723913248322, 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 = 56123595 and 56123604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56823631) 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, 285 + ... + 10598.

It is an arithmetic number, because the mean of its divisors is an integer number (5224320).

Almost surely, 2^56123631 is an apocalyptic number.

56123631 is a deficient number, since it is larger than the sum of its proper divisors (27465489).

56123631 is a wasteful number, since it uses less digits than its factorization.

56123631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11083 (or 11077 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 56123631 is about 7491.5706630853. The cubic root of 56123631 is about 382.8675743758.

Adding to 56123631 its reverse (13632165), we get a palindrome (69755796).

The spelling of 56123631 in words is "fifty-six million, one hundred twenty-three thousand, six hundred thirty-one".