31381068807 has 12 divisors (see below), whose sum is σ = 49448957064. Its totient is φ = 19018829520.

The previous prime is 31381068793. The next prime is 31381068841. The reversal of 31381068807 is 70886018313.

It is not a de Polignac number, because 31381068807 - 2³⁰ = 30307326983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31381068107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158490148 + ... + 158490345.

It is an arithmetic number, because the mean of its divisors is an integer number (4120746422).

Almost surely, 2^31381068807 is an apocalyptic number.

31381068807 is a deficient number, since it is larger than the sum of its proper divisors (18067888257).

31381068807 is a wasteful number, since it uses less digits than its factorization.

31381068807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316980510 (or 316980507 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 31381068807 in words is "thirty-one billion, three hundred eighty-one million, sixty-eight thousand, eight hundred seven".