31298938616 has 64 divisors (see below), whose sum is σ = 64332092160. Its totient is φ = 14157760000.

The previous prime is 31298938603. The next prime is 31298938639. The reversal of 31298938616 is 61683989213.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20713301 + ... + 20714811.

It is an arithmetic number, because the mean of its divisors is an integer number (1005188940).

Almost surely, 2^31298938616 is an apocalyptic number.

It is an amenable number.

31298938616 is an abundant number, since it is smaller than the sum of its proper divisors (33033153544).

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

31298938616 is a wasteful number, since it uses less digits than its factorization.

31298938616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516 (or 2512 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 56.

The spelling of 31298938616 in words is "thirty-one billion, two hundred ninety-eight million, nine hundred thirty-eight thousand, six hundred sixteen".