31431574316 has 24 divisors (see below), whose sum is σ = 56114598960. Its totient is φ = 15399588672.

The previous prime is 31431574243. The next prime is 31431574319. The reversal of 31431574316 is 61347513413.

It is a self number, because there is not a number n which added to its sum of digits gives 31431574316.

It is not an unprimeable number, because it can be changed into a prime (31431574319) by changing a digit.

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, 72650 + ... + 261038.

It is an arithmetic number, because the mean of its divisors is an integer number (2338108290).

Almost surely, 2^31431574316 is an apocalyptic number.

It is an amenable number.

31431574316 is a deficient number, since it is larger than the sum of its proper divisors (24683024644).

31431574316 is a wasteful number, since it uses less digits than its factorization.

31431574316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189233 (or 189231 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The spelling of 31431574316 in words is "thirty-one billion, four hundred thirty-one million, five hundred seventy-four thousand, three hundred sixteen".