31999680752 has 40 divisors (see below), whose sum is σ = 67456942896. Its totient is φ = 14616815616.

The previous prime is 31999680721. The next prime is 31999680763. The reversal of 31999680752 is 25708699913.

It is a junction number, because it is equal to n+sod(n) for n = 31999680691 and 31999680700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772838 + ... + 813189.

Almost surely, 2^31999680752 is an apocalyptic number.

It is an amenable number.

31999680752 is an abundant number, since it is smaller than the sum of its proper divisors (35457262144).

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

31999680752 is a wasteful number, since it uses less digits than its factorization.

31999680752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586145 (or 1586139 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 59.

The spelling of 31999680752 in words is "thirty-one billion, nine hundred ninety-nine million, six hundred eighty thousand, seven hundred fifty-two".