131671187 has 8 divisors (see below), whose sum is σ = 133103616. Its totient is φ = 130245192.

The previous prime is 131671153. The next prime is 131671193. The reversal of 131671187 is 781176131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131671187 - 2¹⁶ = 131605651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131671087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47288 + ... + 49994.

It is an arithmetic number, because the mean of its divisors is an integer number (16637952).

Almost surely, 2^131671187 is an apocalyptic number.

131671187 is a deficient number, since it is larger than the sum of its proper divisors (1432429).

131671187 is a wasteful number, since it uses less digits than its factorization.

131671187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217.

The product of its digits is 7056, while the sum is 35.

The square root of 131671187 is about 11474.8066214643. The cubic root of 131671187 is about 508.7412080252.

The spelling of 131671187 in words is "one hundred thirty-one million, six hundred seventy-one thousand, one hundred eighty-seven".