318109 has 8 divisors (see below), whose sum is σ = 351360. Its totient is φ = 287980.

The previous prime is 318107. The next prime is 318127. The reversal of 318109 is 901813.

It is not a de Polignac number, because 318109 - 2¹ = 318107 is a prime.

It is a Duffinian number.

318109 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 318109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318103) 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 in 7 ways as a sum of consecutive naturals, for example, 1212 + ... + 1450.

It is an arithmetic number, because the mean of its divisors is an integer number (43920).

2³¹⁸¹⁰⁹ is an apocalyptic number.

It is an amenable number.

318109 is a deficient number, since it is larger than the sum of its proper divisors (33251).

318109 is an equidigital number, since it uses as much as digits as its factorization.

318109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 318109 is about 564.0115247049. The cubic root of 318109 is about 68.2640397439.

The spelling of 318109 in words is "three hundred eighteen thousand, one hundred nine".