31907270913 has 16 divisors (see below), whose sum is σ = 51480639360. Its totient is φ = 17160212736.

The previous prime is 31907270903. The next prime is 31907270917.

31907270913 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31907270913 - 2⁶ = 31907270849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31907270917) 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, 44687698 + ... + 44688411.

It is an arithmetic number, because the mean of its divisors is an integer number (3217539960).

Almost surely, 2^31907270913 is an apocalyptic number.

It is an amenable number.

31907270913 is a deficient number, since it is larger than the sum of its proper divisors (19573368447).

31907270913 is a wasteful number, since it uses less digits than its factorization.

31907270913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89376136.

The product of its (nonzero) digits is 71442, while the sum is 42.

The spelling of 31907270913 in words is "thirty-one billion, nine hundred seven million, two hundred seventy thousand, nine hundred thirteen".