56813353831 has 4 divisors (see below), whose sum is σ = 61183611832. Its totient is φ = 52443095832.

The previous prime is 56813353801. The next prime is 56813353853. The reversal of 56813353831 is 13835331865.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13835331865 = 5 ⋅2767066373.

It is a cyclic number.

It is not a de Polignac number, because 56813353831 - 2⁵ = 56813353799 is a prime.

It is a super-2 number, since 2×56813353831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56813353801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2185128981 + ... + 2185129006.

It is an arithmetic number, because the mean of its divisors is an integer number (15295902958).

Almost surely, 2^56813353831 is an apocalyptic number.

56813353831 is a deficient number, since it is larger than the sum of its proper divisors (4370258001).

56813353831 is a wasteful number, since it uses less digits than its factorization.

56813353831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370258000.

The product of its digits is 777600, while the sum is 46.

The spelling of 56813353831 in words is "fifty-six billion, eight hundred thirteen million, three hundred fifty-three thousand, eight hundred thirty-one".