31555501503413 has 12 divisors (see below), whose sum is σ = 34676789037540. Its totient is φ = 28675181885952.

The previous prime is 31555501503341. The next prime is 31555501503469. The reversal of 31555501503413 is 31430510555513.

It can be written as a sum of positive squares in 6 ways, for example, as 12454073915089 + 19101427588324 = 3529033^2 + 4370518^2 .

It is not a de Polignac number, because 31555501503413 - 2⁸ = 31555501503157 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 (31555501505413) 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, 1882553456 + ... + 1882570217.

It is an arithmetic number, because the mean of its divisors is an integer number (2889732419795).

Almost surely, 2^{31555501503413} is an apocalyptic number.

It is an amenable number.

31555501503413 is a deficient number, since it is larger than the sum of its proper divisors (3121287534127).

31555501503413 is a wasteful number, since it uses less digits than its factorization.

31555501503413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765123736 (or 3765123719 counting only the distinct ones).

The product of its (nonzero) digits is 337500, while the sum is 41.

The spelling of 31555501503413 in words is "thirty-one trillion, five hundred fifty-five billion, five hundred one million, five hundred three thousand, four hundred thirteen".