131897472528 has 80 divisors (see below), whose sum is σ = 348324152256. Its totient is φ = 42994936320.

The previous prime is 131897472523. The next prime is 131897472529. The reversal of 131897472528 is 825274798131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131897472523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376351 + ... + 636737.

Almost surely, 2^131897472528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131897472528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174162076128).

131897472528 is an abundant number, since it is smaller than the sum of its proper divisors (216426679728).

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

131897472528 is a wasteful number, since it uses less digits than its factorization.

131897472528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260632 (or 260626 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 57.

The spelling of 131897472528 in words is "one hundred thirty-one billion, eight hundred ninety-seven million, four hundred seventy-two thousand, five hundred twenty-eight".