31636768012 has 24 divisors (see below), whose sum is σ = 55458156096. Its totient is φ = 15791607888.

The previous prime is 31636767991. The next prime is 31636768021. The reversal of 31636768012 is 21086763613.

It is a super-3 number, since 3×31636768012³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31636768012.

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, 8013423 + ... + 8017369.

It is an arithmetic number, because the mean of its divisors is an integer number (2310756504).

Almost surely, 2^31636768012 is an apocalyptic number.

It is an amenable number.

31636768012 is a deficient number, since it is larger than the sum of its proper divisors (23821388084).

31636768012 is a wasteful number, since it uses less digits than its factorization.

31636768012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6837 (or 6835 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 31636768012 in words is "thirty-one billion, six hundred thirty-six million, seven hundred sixty-eight thousand, twelve".