56816351131 has 4 divisors (see below), whose sum is σ = 56817423064. Its totient is φ = 56815279200.

The previous prime is 56816351129. The next prime is 56816351143. The reversal of 56816351131 is 13115361865.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56816351131 - 2¹ = 56816351129 is a prime.

It is a super-2 number, since 2×56816351131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56816351171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452085 + ... + 563926.

It is an arithmetic number, because the mean of its divisors is an integer number (14204355766).

Almost surely, 2^56816351131 is an apocalyptic number.

56816351131 is a deficient number, since it is larger than the sum of its proper divisors (1071933).

56816351131 is a wasteful number, since it uses less digits than its factorization.

56816351131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071932.

The product of its digits is 64800, while the sum is 40.

The spelling of 56816351131 in words is "fifty-six billion, eight hundred sixteen million, three hundred fifty-one thousand, one hundred thirty-one".