31868653000 has 32 divisors (see below), whose sum is σ = 74572650360. Its totient is φ = 12747460800.

The previous prime is 31868652971. The next prime is 31868653031. The reversal of 31868653000 is 35686813.

It can be written as a sum of positive squares in 4 ways, for example, as 7249160164 + 24619492836 = 85142^2 + 156906^2 .

It is a super-2 number, since 2×31868653000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 15933327 + ... + 15935326.

Almost surely, 2^31868653000 is an apocalyptic number.

It is an amenable number.

31868653000 is an abundant number, since it is smaller than the sum of its proper divisors (42703997360).

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

31868653000 is a wasteful number, since it uses less digits than its factorization.

31868653000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31868674 (or 31868660 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 31868653000 in words is "thirty-one billion, eight hundred sixty-eight million, six hundred fifty-three thousand".