31347875313 has 16 divisors (see below), whose sum is σ = 46444037760. Its totient is φ = 20897350128.

The previous prime is 31347875281. The next prime is 31347875327. The reversal of 31347875313 is 31357874313.

31347875313 is a `hidden beast` number, since 3 + 1 + 34 + 7 + 87 + 531 + 3 = 666.

It is not a de Polignac number, because 31347875313 - 2⁵ = 31347875281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31347875393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809356 + ... + 847202.

It is an arithmetic number, because the mean of its divisors is an integer number (2902752360).

Almost surely, 2^31347875313 is an apocalyptic number.

It is an amenable number.

31347875313 is a deficient number, since it is larger than the sum of its proper divisors (15096162447).

31347875313 is a wasteful number, since it uses less digits than its factorization.

31347875313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68533 (or 68527 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The spelling of 31347875313 in words is "thirty-one billion, three hundred forty-seven million, eight hundred seventy-five thousand, three hundred thirteen".