168831 has 24 divisors (see below), whose sum is σ = 278160. Its totient is φ = 101088.

The previous prime is 168803. The next prime is 168851. The reversal of 168831 is 138861.

It is not a de Polignac number, because 168831 - 2¹¹ = 166783 is a prime.

It is a super-2 number, since 2×168831² = 57007813122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (1152) is a multiple of the sum of its prime factors (72).

It is a junction number, because it is equal to n+sod(n) for n = 168795 and 168804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4545 + ... + 4581.

It is an arithmetic number, because the mean of its divisors is an integer number (11590).

2¹⁶⁸⁸³¹ is an apocalyptic number.

168831 is a deficient number, since it is larger than the sum of its proper divisors (109329).

168831 is a wasteful number, since it uses less digits than its factorization.

168831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 53 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 168831 is about 410.8904963613. The cubic root of 168831 is about 55.2693127409.

It can be divided in two parts, 168 and 831, that added together give a palindrome (999).

The spelling of 168831 in words is "one hundred sixty-eight thousand, eight hundred thirty-one".