31663969016 has 16 divisors (see below), whose sum is σ = 59469066000. Its totient is φ = 15805551424.

The previous prime is 31663968989. The next prime is 31663969027. The reversal of 31663969016 is 61096936613.

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 3 ways as a sum of consecutive naturals, for example, 3299045 + ... + 3308628.

It is an arithmetic number, because the mean of its divisors is an integer number (3716816625).

Almost surely, 2^31663969016 is an apocalyptic number.

It is an amenable number.

31663969016 is a deficient number, since it is larger than the sum of its proper divisors (27805096984).

31663969016 is a wasteful number, since it uses less digits than its factorization.

31663969016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6608278 (or 6608274 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 50.

The spelling of 31663969016 in words is "thirty-one billion, six hundred sixty-three million, nine hundred sixty-nine thousand, sixteen".