813223 has 8 divisors (see below), whose sum is σ = 863360. Its totient is φ = 764640.

The previous prime is 813221. The next prime is 813227. The reversal of 813223 is 322318.

It is a happy number.

813223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 813223 - 2¹ = 813221 is a prime.

It is a super-2 number, since 2×813223² = 1322663295458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 813223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813221) 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, 793 + ... + 1501.

It is an arithmetic number, because the mean of its divisors is an integer number (107920).

2⁸¹³²²³ is an apocalyptic number.

813223 is a deficient number, since it is larger than the sum of its proper divisors (50137).

813223 is a wasteful number, since it uses less digits than its factorization.

813223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its digits is 288, while the sum is 19.

The square root of 813223 is about 901.7887779297. The cubic root of 813223 is about 93.3404487206.

It can be divided in two parts, 8 and 13223, that added together give a palindrome (13231).

The spelling of 813223 in words is "eight hundred thirteen thousand, two hundred twenty-three".