123404223 has 16 divisors (see below), whose sum is σ = 174608640. Its totient is φ = 77356224.

The previous prime is 123404201. The next prime is 123404231. The reversal of 123404223 is 322404321.

It is not a de Polignac number, because 123404223 - 2⁹ = 123403711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123404223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123404263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11086 + ... + 19227.

It is an arithmetic number, because the mean of its divisors is an integer number (10913040).

Almost surely, 2^123404223 is an apocalyptic number.

123404223 is a deficient number, since it is larger than the sum of its proper divisors (51204417).

123404223 is a wasteful number, since it uses less digits than its factorization.

123404223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30398.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 123404223 is about 11108.7453386960. The cubic root of 123404223 is about 497.8631783286.

Adding to 123404223 its reverse (322404321), we get a palindrome (445808544).

The spelling of 123404223 in words is "one hundred twenty-three million, four hundred four thousand, two hundred twenty-three".