31343914920 has 64 divisors (see below), whose sum is σ = 94435398720. Its totient is φ = 8322497024.

The previous prime is 31343914897. The next prime is 31343915011. The reversal of 31343914920 is 2941934313.

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 15 ways as a sum of consecutive naturals, for example, 532554 + ... + 588473.

It is an arithmetic number, because the mean of its divisors is an integer number (1475553105).

Almost surely, 2^31343914920 is an apocalyptic number.

31343914920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31343914920 is an abundant number, since it is smaller than the sum of its proper divisors (63091483800).

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

31343914920 is a wasteful number, since it uses less digits than its factorization.

31343914920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121274 (or 1121270 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The spelling of 31343914920 in words is "thirty-one billion, three hundred forty-three million, nine hundred fourteen thousand, nine hundred twenty".