31621028204 has 12 divisors (see below), whose sum is σ = 55826506344. Its totient is φ = 15670597824.

The previous prime is 31621028183. The next prime is 31621028221. The reversal of 31621028204 is 40282012613.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34978562 + ... + 34979465.

It is an arithmetic number, because the mean of its divisors is an integer number (4652208862).

Almost surely, 2^31621028204 is an apocalyptic number.

It is an amenable number.

31621028204 is a deficient number, since it is larger than the sum of its proper divisors (24205478140).

31621028204 is a wasteful number, since it uses less digits than its factorization.

31621028204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69958144 (or 69958142 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 31621028204 in words is "thirty-one billion, six hundred twenty-one million, twenty-eight thousand, two hundred four".