168311 has 12 divisors (see below), whose sum is σ = 201096. Its totient is φ = 139920.

The previous prime is 168293. The next prime is 168323. The reversal of 168311 is 113861.

It is not a de Polignac number, because 168311 - 2⁶ = 168247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1520 + ... + 1626.

It is an arithmetic number, because the mean of its divisors is an integer number (16758).

2¹⁶⁸³¹¹ is an apocalyptic number.

168311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

168311 is a deficient number, since it is larger than the sum of its proper divisors (32785).

168311 is a wasteful number, since it uses less digits than its factorization.

168311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 131 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

The square root of 168311 is about 410.2572363774. The cubic root of 168311 is about 55.2125111668.

The spelling of 168311 in words is "one hundred sixty-eight thousand, three hundred eleven".