123031223 has 16 divisors (see below), whose sum is σ = 142249536. Its totient is φ = 104232960.

The previous prime is 123031217. The next prime is 123031241. The reversal of 123031223 is 322130321.

It is a cyclic number.

It is not a de Polignac number, because 123031223 - 2²⁴ = 106254007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392915 + ... + 393227.

It is an arithmetic number, because the mean of its divisors is an integer number (8890596).

Almost surely, 2^123031223 is an apocalyptic number.

123031223 is a deficient number, since it is larger than the sum of its proper divisors (19218313).

123031223 is a wasteful number, since it uses less digits than its factorization.

123031223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 123031223 is about 11091.9440586400. The cubic root of 123031223 is about 497.3610605001.

Adding to 123031223 its reverse (322130321), we get a palindrome (445161544).

The spelling of 123031223 in words is "one hundred twenty-three million, thirty-one thousand, two hundred twenty-three".