123311223 has 12 divisors (see below), whose sum is σ = 203561488. Its totient is φ = 70463520.

The previous prime is 123311207. The next prime is 123311249. The reversal of 123311223 is 322113321.

It is not a de Polignac number, because 123311223 - 2⁴ = 123311207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123311196 and 123311205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 978598 + ... + 978723.

Almost surely, 2^123311223 is an apocalyptic number.

123311223 is a deficient number, since it is larger than the sum of its proper divisors (80250265).

123311223 is a wasteful number, since it uses less digits than its factorization.

123311223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957334 (or 1957331 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 123311223 is about 11104.5586584970. The cubic root of 123311223 is about 497.7380802011.

Adding to 123311223 its reverse (322113321), we get a palindrome (445424544).

The spelling of 123311223 in words is "one hundred twenty-three million, three hundred eleven thousand, two hundred twenty-three".