31513136854 has 16 divisors (see below), whose sum is σ = 48431416320. Its totient is φ = 15369471040.

The previous prime is 31513136833. The next prime is 31513136867. The reversal of 31513136854 is 45863131513.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462507 + ... + 526249.

It is an arithmetic number, because the mean of its divisors is an integer number (3026963520).

Almost surely, 2^31513136854 is an apocalyptic number.

31513136854 is a deficient number, since it is larger than the sum of its proper divisors (16918279466).

31513136854 is a wasteful number, since it uses less digits than its factorization.

31513136854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69815.

The product of its digits is 129600, while the sum is 40.

The spelling of 31513136854 in words is "thirty-one billion, five hundred thirteen million, one hundred thirty-six thousand, eight hundred fifty-four".