56400017831 has 8 divisors (see below), whose sum is σ = 57995318304. Its totient is φ = 54815178880.

The previous prime is 56400017827. The next prime is 56400017873. The reversal of 56400017831 is 13871000465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56400017831 - 2² = 56400017827 is a prime.

It is a super-2 number, since 2×56400017831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56400017791 and 56400017800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56400017231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2604446 + ... + 2626011.

It is an arithmetic number, because the mean of its divisors is an integer number (7249414788).

Almost surely, 2^56400017831 is an apocalyptic number.

56400017831 is a deficient number, since it is larger than the sum of its proper divisors (1595300473).

56400017831 is a wasteful number, since it uses less digits than its factorization.

56400017831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230761.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 56400017831 in words is "fifty-six billion, four hundred million, seventeen thousand, eight hundred thirty-one".