131031525504 has 128 divisors (see below), whose sum is σ = 396202337280. Its totient is φ = 37980124160.

The previous prime is 131031525487. The next prime is 131031525511. The reversal of 131031525504 is 405525130131.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577212 + ... + 771515.

It is an arithmetic number, because the mean of its divisors is an integer number (3095330760).

Almost surely, 2^131031525504 is an apocalyptic number.

It is an amenable number.

131031525504 is an abundant number, since it is smaller than the sum of its proper divisors (265170811776).

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

131031525504 is a wasteful number, since it uses less digits than its factorization.

131031525504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348778 (or 1348766 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 131031525504 its reverse (405525130131), we get a palindrome (536556655635).

The spelling of 131031525504 in words is "one hundred thirty-one billion, thirty-one million, five hundred twenty-five thousand, five hundred four".