431423155856 has 40 divisors (see below), whose sum is σ = 1042139054784. Its totient is φ = 168086943360.

The previous prime is 431423155837. The next prime is 431423155879. The reversal of 431423155856 is 658551324134.

It is a super-2 number, since 2×431423155856² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 431423155856.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175089335 + ... + 175091798.

Almost surely, 2^431423155856 is an apocalyptic number.

It is an amenable number.

431423155856 is an abundant number, since it is smaller than the sum of its proper divisors (610715898928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431423155856 is a wasteful number, since it uses less digits than its factorization.

431423155856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350181159 (or 350181153 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 47.

The spelling of 431423155856 in words is "four hundred thirty-one billion, four hundred twenty-three million, one hundred fifty-five thousand, eight hundred fifty-six".