131331523330521 has 14 divisors (see below), whose sum is σ = 196907208506250. Its totient is φ = 87554348886528.

The previous prime is 131331523330481. The next prime is 131331523330541. The reversal of 131331523330521 is 125033325133131.

131331523330521 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 315 + 2 + 3 + 330 + 5 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 104308535054025 + 27022988276496 = 10213155^2 + 5198364^2 .

It is not a de Polignac number, because 131331523330521 - 2⁷ = 131331523330393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131331523330541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 90076489896 + ... + 90076491353.

Almost surely, 2^{131331523330521} is an apocalyptic number.

It is an amenable number.

131331523330521 is a deficient number, since it is larger than the sum of its proper divisors (65575685175729).

131331523330521 is an frugal number, since it uses more digits than its factorization.

131331523330521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180152981267 (or 180152981252 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 36.

Adding to 131331523330521 its reverse (125033325133131), we get a palindrome (256364848463652).

The spelling of 131331523330521 in words is "one hundred thirty-one trillion, three hundred thirty-one billion, five hundred twenty-three million, three hundred thirty thousand, five hundred twenty-one".