31347401856 has 64 divisors (see below), whose sum is σ = 83314905600. Its totient is φ = 10443064320.

The previous prime is 31347401843. The next prime is 31347401867. The reversal of 31347401856 is 65810474313.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664161 + ... + 709791.

It is an arithmetic number, because the mean of its divisors is an integer number (1301795400).

Almost surely, 2^31347401856 is an apocalyptic number.

It is an amenable number.

31347401856 is an abundant number, since it is smaller than the sum of its proper divisors (51967503744).

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

31347401856 is a wasteful number, since it uses less digits than its factorization.

31347401856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47437 (or 47425 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 31347401856 in words is "thirty-one billion, three hundred forty-seven million, four hundred one thousand, eight hundred fifty-six".