56431693 has 4 divisors (see below), whose sum is σ = 56959200. Its totient is φ = 55904188.

The previous prime is 56431681. The next prime is 56431733. The reversal of 56431693 is 39613465.

56431693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39613465 = 5 ⋅7922693.

It is a cyclic number.

It is not a de Polignac number, because 56431693 - 2⁹ = 56431181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56131693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263593 + ... + 263806.

It is an arithmetic number, because the mean of its divisors is an integer number (14239800).

Almost surely, 2^56431693 is an apocalyptic number.

It is an amenable number.

56431693 is a deficient number, since it is larger than the sum of its proper divisors (527507).

56431693 is a wasteful number, since it uses less digits than its factorization.

56431693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527506.

The product of its digits is 58320, while the sum is 37.

The square root of 56431693 is about 7512.1031009964. The cubic root of 56431693 is about 383.5668152072.

The spelling of 56431693 in words is "fifty-six million, four hundred thirty-one thousand, six hundred ninety-three".