31471964312 has 32 divisors (see below), whose sum is σ = 59391435600. Its totient is φ = 15634560000.

The previous prime is 31471964309. The next prime is 31471964339. The reversal of 31471964312 is 21346917413.

It is a self number, because there is not a number n which added to its sum of digits gives 31471964312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802112 + ... + 840432.

Almost surely, 2^31471964312 is an apocalyptic number.

It is an amenable number.

31471964312 is a deficient number, since it is larger than the sum of its proper divisors (27919471288).

31471964312 is a wasteful number, since it uses less digits than its factorization.

31471964312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38987 (or 38983 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The spelling of 31471964312 in words is "thirty-one billion, four hundred seventy-one million, nine hundred sixty-four thousand, three hundred twelve".