623431223 has 4 divisors (see below), whose sum is σ = 623590968. Its totient is φ = 623271480.

The previous prime is 623431219. The next prime is 623431231. The reversal of 623431223 is 322134326.

623431223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 623431223 - 2² = 623431219 is a prime.

It is a super-2 number, since 2×623431223² = 777332979622551458, 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 = 623431192 and 623431201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623431213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73868 + ... + 81873.

It is an arithmetic number, because the mean of its divisors is an integer number (155897742).

Almost surely, 2^623431223 is an apocalyptic number.

623431223 is a deficient number, since it is larger than the sum of its proper divisors (159745).

623431223 is a wasteful number, since it uses less digits than its factorization.

623431223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159744.

The product of its digits is 5184, while the sum is 26.

The square root of 623431223 is about 24968.6047467615. The cubic root of 623431223 is about 854.2720217311.

Adding to 623431223 its reverse (322134326), we get a palindrome (945565549).

The spelling of 623431223 in words is "six hundred twenty-three million, four hundred thirty-one thousand, two hundred twenty-three".