31920601420516 has 24 divisors (see below), whose sum is σ = 56079194403960. Its totient is φ = 15897976184832.

The previous prime is 31920601420493. The next prime is 31920601420537. The reversal of 31920601420516 is 61502410602913.

It can be written as a sum of positive squares in 4 ways, for example, as 33234748416 + 31887366672100 = 182304^2 + 5646890^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92731650 + ... + 93075238.

It is an arithmetic number, because the mean of its divisors is an integer number (2336633100165).

Almost surely, 2^{31920601420516} is an apocalyptic number.

It is an amenable number.

31920601420516 is a deficient number, since it is larger than the sum of its proper divisors (24158592983444).

31920601420516 is a wasteful number, since it uses less digits than its factorization.

31920601420516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434223 (or 434221 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 31920601420516 in words is "thirty-one trillion, nine hundred twenty billion, six hundred one million, four hundred twenty thousand, five hundred sixteen".