56431219 has 12 divisors (see below), whose sum is σ = 61756464. Its totient is φ = 51259824.

The previous prime is 56431189. The next prime is 56431223. The reversal of 56431219 is 91213465.

It is not a de Polignac number, because 56431219 - 2⁷ = 56431091 is a prime.

It is a super-2 number, since 2×56431219² = 6368964955651922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56435219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57874 + ... + 58840.

It is an arithmetic number, because the mean of its divisors is an integer number (5146372).

Almost surely, 2^56431219 is an apocalyptic number.

56431219 is a deficient number, since it is larger than the sum of its proper divisors (5325245).

56431219 is an equidigital number, since it uses as much as digits as its factorization.

56431219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114 (or 1047 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 56431219 is about 7512.0715518424. The cubic root of 56431219 is about 383.5657412765.

The spelling of 56431219 in words is "fifty-six million, four hundred thirty-one thousand, two hundred nineteen".