163171 has 2 divisors, whose sum is σ = 163172. Its totient is φ = 163170.

The previous prime is 163169. The next prime is 163181. The reversal of 163171 is 171361.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163171 - 2¹ = 163169 is a prime.

Together with 163169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (163151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81585 + 81586.

It is an arithmetic number, because the mean of its divisors is an integer number (81586).

2¹⁶³¹⁷¹ is an apocalyptic number.

163171 is a deficient number, since it is larger than the sum of its proper divisors (1).

163171 is an equidigital number, since it uses as much as digits as its factorization.

163171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126, while the sum is 19.

The square root of 163171 is about 403.9443030914. The cubic root of 163171 is about 54.6446512250.

The spelling of 163171 in words is "one hundred sixty-three thousand, one hundred seventy-one".