131171015 has 16 divisors (see below), whose sum is σ = 159564288. Its totient is φ = 103506336.

The previous prime is 131170981. The next prime is 131171017. The reversal of 131171015 is 510171131.

It is a cyclic number.

It is not a de Polignac number, because 131171015 - 2¹⁴ = 131154631 is a prime.

It is a super-2 number, since 2×131171015² = 34411670352260450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131171017) 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, 250544 + ... + 251066.

It is an arithmetic number, because the mean of its divisors is an integer number (9972768).

Almost surely, 2^131171015 is an apocalyptic number.

131171015 is a deficient number, since it is larger than the sum of its proper divisors (28393273).

131171015 is a wasteful number, since it uses less digits than its factorization.

131171015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118.

The product of its (nonzero) digits is 105, while the sum is 20.

The square root of 131171015 is about 11452.9915306002. The cubic root of 131171015 is about 508.0962150099.

The spelling of 131171015 in words is "one hundred thirty-one million, one hundred seventy-one thousand, fifteen".