131879187 has 24 divisors (see below), whose sum is σ = 208381680. Its totient is φ = 79706880.

The previous prime is 131879179. The next prime is 131879273. The reversal of 131879187 is 781978131.

It is a happy number.

It is not a de Polignac number, because 131879187 - 2³ = 131879179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131879087) 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, 38863 + ... + 42119.

It is an arithmetic number, because the mean of its divisors is an integer number (8682570).

Almost surely, 2^131879187 is an apocalyptic number.

131879187 is a deficient number, since it is larger than the sum of its proper divisors (76502493).

131879187 is a wasteful number, since it uses less digits than its factorization.

131879187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683 (or 3680 counting only the distinct ones).

The product of its digits is 84672, while the sum is 45.

The square root of 131879187 is about 11483.8663785330. The cubic root of 131879187 is about 509.0089519978.

The spelling of 131879187 in words is "one hundred thirty-one million, eight hundred seventy-nine thousand, one hundred eighty-seven".