31087678013 has 32 divisors (see below), whose sum is σ = 38173532160. Its totient is φ = 24744242880.

The previous prime is 31087678007. The next prime is 31087678021.

31087678013 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31087678013 - 2¹⁶ = 31087612477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31087678043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1010606 + ... + 1040912.

It is an arithmetic number, because the mean of its divisors is an integer number (1192922880).

Almost surely, 2^31087678013 is an apocalyptic number.

It is an amenable number.

31087678013 is a deficient number, since it is larger than the sum of its proper divisors (7085854147).

31087678013 is a wasteful number, since it uses less digits than its factorization.

31087678013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30537.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 31087678013 in words is "thirty-one billion, eighty-seven million, six hundred seventy-eight thousand, thirteen".