131400113520 has 80 divisors (see below), whose sum is σ = 438674235552. Its totient is φ = 32344642560.

The previous prime is 131400113491. The next prime is 131400113527. The reversal of 131400113520 is 25311004131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131400113527) 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, 21054591 + ... + 21060830.

Almost surely, 2^131400113520 is an apocalyptic number.

131400113520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131400113520 is an abundant number, since it is smaller than the sum of its proper divisors (307274122032).

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

131400113520 is a wasteful number, since it uses less digits than its factorization.

131400113520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42115450 (or 42115444 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 131400113520 its reverse (25311004131), we get a palindrome (156711117651).

The spelling of 131400113520 in words is "one hundred thirty-one billion, four hundred million, one hundred thirteen thousand, five hundred twenty".