131000171 has 4 divisors (see below), whose sum is σ = 131342592. Its totient is φ = 130657752.

The previous prime is 131000161. The next prime is 131000189. The reversal of 131000171 is 171000131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131000171 is a prime.

It is a super-2 number, since 2×131000171² = 34322089604058482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131000161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170636 + ... + 171401.

It is an arithmetic number, because the mean of its divisors is an integer number (32835648).

Almost surely, 2^131000171 is an apocalyptic number.

131000171 is a deficient number, since it is larger than the sum of its proper divisors (342421).

131000171 is an equidigital number, since it uses as much as digits as its factorization.

131000171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342420.

The product of its (nonzero) digits is 21, while the sum is 14.

The square root of 131000171 is about 11445.5306124268. The cubic root of 131000171 is about 507.8755287971.

The spelling of 131000171 in words is "one hundred thirty-one million, one hundred seventy-one", and thus it is an aban number.