31941253816 has 16 divisors (see below), whose sum is σ = 59892588000. Its totient is φ = 15969897024.

The previous prime is 31941253807. The next prime is 31941253859. The reversal of 31941253816 is 61835214913.

It is a congruent 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, 124860 + ... + 281908.

It is an arithmetic number, because the mean of its divisors is an integer number (3743286750).

Almost surely, 2^31941253816 is an apocalyptic number.

It is an amenable number.

31941253816 is a deficient number, since it is larger than the sum of its proper divisors (27951334184).

31941253816 is a wasteful number, since it uses less digits than its factorization.

31941253816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182478 (or 182474 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The spelling of 31941253816 in words is "thirty-one billion, nine hundred forty-one million, two hundred fifty-three thousand, eight hundred sixteen".