813318 has 16 divisors (see below), whose sum is σ = 1774656. Its totient is φ = 246440.

The previous prime is 813311. The next prime is 813343.

813318 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×813318² = 1322972338248, which contains 22 as substring.

It is a Curzon number.

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 813318.

It is not an unprimeable number, because it can be changed into a prime (813311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6096 + ... + 6227.

It is an arithmetic number, because the mean of its divisors is an integer number (110916).

2⁸¹³³¹⁸ is an apocalyptic number.

813318 is an abundant number, since it is smaller than the sum of its proper divisors (961338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813318 is a wasteful number, since it uses less digits than its factorization.

813318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12339.

The product of its digits is 576, while the sum is 24.

The square root of 813318 is about 901.8414494799. The cubic root of 813318 is about 93.3440832289.

The spelling of 813318 in words is "eight hundred thirteen thousand, three hundred eighteen".