131173171 has 2 divisors, whose sum is σ = 131173172. Its totient is φ = 131173170.

The previous prime is 131173157. The next prime is 131173181. The reversal of 131173171 is 171371131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131173171 - 2¹¹ = 131171123 is a prime.

It is not a weakly prime, because it can be changed into another prime (131173111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65586585 + 65586586.

It is an arithmetic number, because the mean of its divisors is an integer number (65586586).

Almost surely, 2^131173171 is an apocalyptic number.

131173171 is a deficient number, since it is larger than the sum of its proper divisors (1).

131173171 is an equidigital number, since it uses as much as digits as its factorization.

131173171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 441, while the sum is 25.

The square root of 131173171 is about 11453.0856540934. The cubic root of 131173171 is about 508.0989987790.

The spelling of 131173171 in words is "one hundred thirty-one million, one hundred seventy-three thousand, one hundred seventy-one".