131354371521 has 32 divisors (see below), whose sum is σ = 202342886400. Its totient is φ = 84126107520.

The previous prime is 131354371517. The next prime is 131354371531. The reversal of 131354371521 is 125173453131.

131354371521 is a `hidden beast` number, since 1 + 3 + 13 + 54 + 3 + 71 + 521 = 666.

It is not a de Polignac number, because 131354371521 - 2² = 131354371517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131354371501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 458086 + ... + 687423.

It is an arithmetic number, because the mean of its divisors is an integer number (6323215200).

Almost surely, 2^131354371521 is an apocalyptic number.

It is an amenable number.

131354371521 is a deficient number, since it is larger than the sum of its proper divisors (70988514879).

131354371521 is a wasteful number, since it uses less digits than its factorization.

131354371521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145686 (or 1145680 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The spelling of 131354371521 in words is "one hundred thirty-one billion, three hundred fifty-four million, three hundred seventy-one thousand, five hundred twenty-one".