31430264872 has 16 divisors (see below), whose sum is σ = 60832771200. Its totient is φ = 15208192560.

The previous prime is 31430264863. The next prime is 31430264939. The reversal of 31430264872 is 27846203413.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63367222 + ... + 63367717.

It is an arithmetic number, because the mean of its divisors is an integer number (3802048200).

Almost surely, 2^31430264872 is an apocalyptic number.

It is an amenable number.

31430264872 is a deficient number, since it is larger than the sum of its proper divisors (29402506328).

31430264872 is a wasteful number, since it uses less digits than its factorization.

31430264872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126734976 (or 126734972 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 31430264872 in words is "thirty-one billion, four hundred thirty million, two hundred sixty-four thousand, eight hundred seventy-two".