118317 has 4 divisors (see below), whose sum is σ = 157760. Its totient is φ = 78876.

The previous prime is 118297. The next prime is 118343. The reversal of 118317 is 713811.

118317 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 118317 - 2⁶ = 118253 is a prime.

It is a D-number.

It is a Duffinian number.

118317 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 118293 and 118302.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 118317.

It is not an unprimeable number, because it can be changed into a prime (118387) 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, 19717 + ... + 19722.

It is an arithmetic number, because the mean of its divisors is an integer number (39440).

2¹¹⁸³¹⁷ is an apocalyptic number.

It is an amenable number.

118317 is a deficient number, since it is larger than the sum of its proper divisors (39443).

118317 is an equidigital number, since it uses as much as digits as its factorization.

118317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39442.

The product of its digits is 168, while the sum is 21.

The square root of 118317 is about 343.9723826123. The cubic root of 118317 is about 49.0925641667.

It can be divided in two parts, 118 and 317, that added together give a triangular number (435 = T₂₉).

The spelling of 118317 in words is "one hundred eighteen thousand, three hundred seventeen".