31057838920 has 64 divisors (see below), whose sum is σ = 70345584000. Its totient is φ = 12340543488.

The previous prime is 31057838909. The next prime is 31057839011. The reversal of 31057838920 is 2983875013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9327816 + ... + 9331144.

It is an arithmetic number, because the mean of its divisors is an integer number (1099149750).

Almost surely, 2^31057838920 is an apocalyptic number.

It is an amenable number.

31057838920 is an abundant number, since it is smaller than the sum of its proper divisors (39287745080).

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

31057838920 is a wasteful number, since it uses less digits than its factorization.

31057838920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822 (or 4818 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 31057838920 in words is "thirty-one billion, fifty-seven million, eight hundred thirty-eight thousand, nine hundred twenty".