131608171 has 4 divisors (see below), whose sum is σ = 133765744. Its totient is φ = 129450600.

The previous prime is 131608159. The next prime is 131608199. The reversal of 131608171 is 171806131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131608171 - 2¹⁵ = 131575403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131608111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078695 + ... + 1078816.

It is an arithmetic number, because the mean of its divisors is an integer number (33441436).

Almost surely, 2^131608171 is an apocalyptic number.

131608171 is a deficient number, since it is larger than the sum of its proper divisors (2157573).

131608171 is an equidigital number, since it uses as much as digits as its factorization.

131608171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157572.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 131608171 is about 11472.0604513749. The cubic root of 131608171 is about 508.6600362509.

The spelling of 131608171 in words is "one hundred thirty-one million, six hundred eight thousand, one hundred seventy-one".