318213 has 12 divisors (see below), whose sum is σ = 525408. Its totient is φ = 181800.

The previous prime is 318211. The next prime is 318229. The reversal of 318213 is 312813.

318213 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 318213 - 2¹ = 318211 is a prime.

It is an Ulam number.

318213 is strictly pandigital in base 7.

318213 is a lucky number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318211) 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, 2463 + ... + 2588.

It is an arithmetic number, because the mean of its divisors is an integer number (43784).

2³¹⁸²¹³ is an apocalyptic number.

It is an amenable number.

318213 is a deficient number, since it is larger than the sum of its proper divisors (207195).

318213 is a wasteful number, since it uses less digits than its factorization.

318213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5064 (or 5061 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 318213 is about 564.1037138683. The cubic root of 318213 is about 68.2714781655.

The spelling of 318213 in words is "three hundred eighteen thousand, two hundred thirteen".