168313 has 4 divisors (see below), whose sum is σ = 172900. Its totient is φ = 163728.

The previous prime is 168293. The next prime is 168323. The reversal of 168313 is 313861.

168313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313861 = 19 ⋅16519.

It can be written as a sum of positive squares in 2 ways, for example, as 138384 + 29929 = 372^2 + 173^2 .

It is a cyclic number.

It is not a de Polignac number, because 168313 - 2⁵ = 168281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2238 + ... + 2311.

It is an arithmetic number, because the mean of its divisors is an integer number (43225).

2¹⁶⁸³¹³ is an apocalyptic number.

It is an amenable number.

168313 is a deficient number, since it is larger than the sum of its proper divisors (4587).

168313 is an equidigital number, since it uses as much as digits as its factorization.

168313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586.

The product of its digits is 432, while the sum is 22.

The square root of 168313 is about 410.2596738652. The cubic root of 168313 is about 55.2127298583.

The spelling of 168313 in words is "one hundred sixty-eight thousand, three hundred thirteen".