31016939616 has 144 divisors (see below), whose sum is σ = 99119625696. Its totient is φ = 9128706048.

The previous prime is 31016939581. The next prime is 31016939641. The reversal of 31016939616 is 61693961013.

It is a happy number.

31016939616 is a `hidden beast` number, since 3 + 10 + 16 + 9 + 3 + 9 + 616 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93985 + ... + 266208.

It is an arithmetic number, because the mean of its divisors is an integer number (688330734).

Almost surely, 2^31016939616 is an apocalyptic number.

31016939616 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31016939616 is an abundant number, since it is smaller than the sum of its proper divisors (68102686080).

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

31016939616 is a wasteful number, since it uses less digits than its factorization.

31016939616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360245 (or 360234 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The spelling of 31016939616 in words is "thirty-one billion, sixteen million, nine hundred thirty-nine thousand, six hundred sixteen".