131031478844 has 48 divisors (see below), whose sum is σ = 263221092288. Its totient is φ = 55908707328.

The previous prime is 131031478819. The next prime is 131031478849. The reversal of 131031478844 is 448874130131.

It is a junction number, because it is equal to n+sod(n) for n = 131031478795 and 131031478804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031478849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6182714 + ... + 6203870.

It is an arithmetic number, because the mean of its divisors is an integer number (5483772756).

Almost surely, 2^131031478844 is an apocalyptic number.

131031478844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131031478844 is an abundant number, since it is smaller than the sum of its proper divisors (132189613444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131031478844 is a wasteful number, since it uses less digits than its factorization.

131031478844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22134 (or 22132 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 131031478844 in words is "one hundred thirty-one billion, thirty-one million, four hundred seventy-eight thousand, eight hundred forty-four".