823223 has 4 divisors (see below), whose sum is σ = 851640. Its totient is φ = 794808.

The previous prime is 823219. The next prime is 823231. The reversal of 823223 is 322328.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 823223 - 2² = 823219 is a prime.

It is a super-2 number, since 2×823223² = 1355392215458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 823195 and 823204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14165 + ... + 14222.

It is an arithmetic number, because the mean of its divisors is an integer number (212910).

2⁸²³²²³ is an apocalyptic number.

823223 is a deficient number, since it is larger than the sum of its proper divisors (28417).

823223 is a wasteful number, since it uses less digits than its factorization.

823223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28416.

The product of its digits is 576, while the sum is 20.

The square root of 823223 is about 907.3163726066. The cubic root of 823223 is about 93.7214858468.

The spelling of 823223 in words is "eight hundred twenty-three thousand, two hundred twenty-three".