123213023 has 4 divisors (see below), whose sum is σ = 123360720. Its totient is φ = 123065328.

The previous prime is 123213019. The next prime is 123213037. The reversal of 123213023 is 320312321.

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 123213023 - 2² = 123213019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123212992 and 123213010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123213073) 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, 72590 + ... + 74267.

It is an arithmetic number, because the mean of its divisors is an integer number (30840180).

Almost surely, 2^123213023 is an apocalyptic number.

123213023 is a deficient number, since it is larger than the sum of its proper divisors (147697).

123213023 is an equidigital number, since it uses as much as digits as its factorization.

123213023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147696.

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

The square root of 123213023 is about 11100.1361703359. The cubic root of 123213023 is about 497.6059190488.

Adding to 123213023 its reverse (320312321), we get a palindrome (443525344).

The spelling of 123213023 in words is "one hundred twenty-three million, two hundred thirteen thousand, twenty-three".