56131431 has 8 divisors (see below), whose sum is σ = 78096000. Its totient is φ = 35793912.

The previous prime is 56131409. The next prime is 56131441. The reversal of 56131431 is 13413165.

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

It is not a de Polignac number, because 56131431 - 2⁷ = 56131303 is a prime.

It is a super-2 number, since 2×56131431² = 6301475092215522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56131441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406681 + ... + 406818.

It is an arithmetic number, because the mean of its divisors is an integer number (9762000).

Almost surely, 2^56131431 is an apocalyptic number.

56131431 is a deficient number, since it is larger than the sum of its proper divisors (21964569).

56131431 is a wasteful number, since it uses less digits than its factorization.

56131431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813525.

The product of its digits is 1080, while the sum is 24.

The square root of 56131431 is about 7492.0912300906. The cubic root of 56131431 is about 382.8853103911.

Adding to 56131431 its reverse (13413165), we get a palindrome (69544596).

The spelling of 56131431 in words is "fifty-six million, one hundred thirty-one thousand, four hundred thirty-one".