31854045813 has 16 divisors (see below), whose sum is σ = 44711344320. Its totient is φ = 20116584576.

The previous prime is 31854045791. The next prime is 31854045829.

It is a happy number.

31854045813 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31854045813 - 2⁵ = 31854045781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31854045913) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1023031 + ... + 1053707.

It is an arithmetic number, because the mean of its divisors is an integer number (2794459020).

Almost surely, 2^31854045813 is an apocalyptic number.

It is an amenable number.

31854045813 is a deficient number, since it is larger than the sum of its proper divisors (12857298507).

31854045813 is a wasteful number, since it uses less digits than its factorization.

31854045813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48916.

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 31854045813 in words is "thirty-one billion, eight hundred fifty-four million, forty-five thousand, eight hundred thirteen".