31121235096 has 64 divisors (see below), whose sum is σ = 94148282880. Its totient is φ = 8368734720.

The previous prime is 31121235083. The next prime is 31121235109. The reversal of 31121235096 is 69053212113.

It is an interprime number because it is at equal distance from previous prime (31121235083) and next prime (31121235109).

It is a congruent number.

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, 5445540 + ... + 5451251.

It is an arithmetic number, because the mean of its divisors is an integer number (1471066920).

Almost surely, 2^31121235096 is an apocalyptic number.

It is an amenable number.

31121235096 is an abundant number, since it is smaller than the sum of its proper divisors (63027047784).

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

31121235096 is a wasteful number, since it uses less digits than its factorization.

31121235096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10896824 (or 10896820 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The spelling of 31121235096 in words is "thirty-one billion, one hundred twenty-one million, two hundred thirty-five thousand, ninety-six".