31921004634892 has 24 divisors (see below), whose sum is σ = 57692625943680. Its totient is φ = 15437912858880.

The previous prime is 31921004634887. The next prime is 31921004634919. The reversal of 31921004634892 is 29843640012913.

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, 64205917 + ... + 64701172.

It is an arithmetic number, because the mean of its divisors is an integer number (2403859414320).

Almost surely, 2^{31921004634892} is an apocalyptic number.

It is an amenable number.

31921004634892 is a deficient number, since it is larger than the sum of its proper divisors (25771621308788).

31921004634892 is a wasteful number, since it uses less digits than its factorization.

31921004634892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128909121 (or 128909119 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 31921004634892 in words is "thirty-one trillion, nine hundred twenty-one billion, four million, six hundred thirty-four thousand, eight hundred ninety-two".