131887380 has 48 divisors (see below), whose sum is σ = 372887424. Its totient is φ = 34826880.

The previous prime is 131887369. The next prime is 131887387. The reversal of 131887380 is 83788131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131887387) 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, 4491 + ... + 16850.

It is an arithmetic number, because the mean of its divisors is an integer number (7768488).

Almost surely, 2^131887380 is an apocalyptic number.

131887380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131887380 is an abundant number, since it is smaller than the sum of its proper divisors (241000044).

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

131887380 is a wasteful number, since it uses less digits than its factorization.

131887380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21456 (or 21454 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 131887380 is about 11484.2230908320. The cubic root of 131887380 is about 509.0194925137.

The spelling of 131887380 in words is "one hundred thirty-one million, eight hundred eighty-seven thousand, three hundred eighty".