131915185532 has 72 divisors (see below), whose sum is σ = 264848799600. Its totient is φ = 57265947648.

The previous prime is 131915185531. The next prime is 131915185609. The reversal of 131915185532 is 235581519131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131915185531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26072819 + ... + 26077877.

It is an arithmetic number, because the mean of its divisors is an integer number (3678455550).

Almost surely, 2^131915185532 is an apocalyptic number.

It is an amenable number.

131915185532 is an abundant number, since it is smaller than the sum of its proper divisors (132933614068).

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

131915185532 is a wasteful number, since it uses less digits than its factorization.

131915185532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7375 (or 7360 counting only the distinct ones).

The product of its digits is 162000, while the sum is 44.

The spelling of 131915185532 in words is "one hundred thirty-one billion, nine hundred fifteen million, one hundred eighty-five thousand, five hundred thirty-two".