56407431 has 32 divisors (see below), whose sum is σ = 81543168. Its totient is φ = 34594560.

The previous prime is 56407369. The next prime is 56407433. The reversal of 56407431 is 13470465.

It is not a de Polignac number, because 56407431 - 2⁷ = 56407303 is a prime.

It is a super-2 number, since 2×56407431² = 6363596544039522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56407433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 359205 + ... + 359361.

It is an arithmetic number, because the mean of its divisors is an integer number (2548224).

Almost surely, 2^56407431 is an apocalyptic number.

56407431 is a deficient number, since it is larger than the sum of its proper divisors (25135737).

56407431 is a wasteful number, since it uses less digits than its factorization.

56407431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 56407431 is about 7510.4880666971. The cubic root of 56407431 is about 383.5118376371.

Adding to 56407431 its reverse (13470465), we get a palindrome (69877896).

The spelling of 56407431 in words is "fifty-six million, four hundred seven thousand, four hundred thirty-one".