56143527931 has 4 divisors (see below), whose sum is σ = 56155603864. Its totient is φ = 56131452000.

The previous prime is 56143527917. The next prime is 56143527943. The reversal of 56143527931 is 13972534165.

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 56143527931 - 2¹¹ = 56143525883 is a prime.

It is a super-2 number, since 2×56143527931² (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 (56143527961) 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, 6030990 + ... + 6040291.

It is an arithmetic number, because the mean of its divisors is an integer number (14038900966).

Almost surely, 2^56143527931 is an apocalyptic number.

56143527931 is a deficient number, since it is larger than the sum of its proper divisors (12075933).

56143527931 is a wasteful number, since it uses less digits than its factorization.

56143527931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12075932.

The product of its digits is 680400, while the sum is 46.

The spelling of 56143527931 in words is "fifty-six billion, one hundred forty-three million, five hundred twenty-seven thousand, nine hundred thirty-one".