123231223 has 2 divisors, whose sum is σ = 123231224.
Its totient is φ = 123231222.
The previous prime is 123231209. The next prime is 123231233. The reversal of 123231223 is 322132321.
Adding to 123231223 its reverse (322132321), we get a palindrome (445363544).
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 123231223 - 25 = 123231191 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 123231223.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (123231203) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61615611 + 61615612.
It is an arithmetic number, because the mean of its divisors is an integer number (61615612).
Almost surely, 2123231223 is an apocalyptic number.
123231223 is a deficient number, since it is larger than the sum of its proper divisors (1).
123231223 is an equidigital number, since it uses as much as digits as its factorization.
123231223 is an evil number, because the sum of its binary digits is even.
The product of its digits is 432, while the sum is 19.
The square root of 123231223 is about 11100.9559498270.
The cubic root of 123231223 is about 497.6304185744.
The spelling of 123231223 in words is "one hundred twenty-three million, two hundred thirty-one thousand, two hundred twenty-three".