31120861416 has 32 divisors (see below), whose sum is σ = 79077602400. Its totient is φ = 10203560640.

The previous prime is 31120861403. The next prime is 31120861433. The reversal of 31120861416 is 61416802113.

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, 10627246 + ... + 10630173.

It is an arithmetic number, because the mean of its divisors is an integer number (2471175075).

Almost surely, 2^31120861416 is an apocalyptic number.

It is an amenable number.

31120861416 is an abundant number, since it is smaller than the sum of its proper divisors (47956740984).

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

31120861416 is a wasteful number, since it uses less digits than its factorization.

31120861416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21257489 (or 21257485 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The spelling of 31120861416 in words is "thirty-one billion, one hundred twenty million, eight hundred sixty-one thousand, four hundred sixteen".