31423887432 has 96 divisors (see below), whose sum is σ = 97296326400. Its totient is φ = 8975308032.

The previous prime is 31423887421. The next prime is 31423887479. The reversal of 31423887432 is 23478832413.

31423887432 is a `hidden beast` number, since 314 + 238 + 8 + 74 + 32 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1870044 + ... + 1886772.

It is an arithmetic number, because the mean of its divisors is an integer number (1013503400).

Almost surely, 2^31423887432 is an apocalyptic number.

It is an amenable number.

31423887432 is an abundant number, since it is smaller than the sum of its proper divisors (65872438968).

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

31423887432 is a wasteful number, since it uses less digits than its factorization.

31423887432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20475 (or 20468 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The spelling of 31423887432 in words is "thirty-one billion, four hundred twenty-three million, eight hundred eighty-seven thousand, four hundred thirty-two".