23012123 has 4 divisors (see below), whose sum is σ = 23446368. Its totient is φ = 22577880.

The previous prime is 23012117. The next prime is 23012149. The reversal of 23012123 is 32121032.

It is a happy number.

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 23012123 - 2²⁰ = 21963547 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23012098 and 23012107.

It is not an unprimeable number, because it can be changed into a prime (23012623) 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, 217043 + ... + 217148.

It is an arithmetic number, because the mean of its divisors is an integer number (5861592).

Almost surely, 2^23012123 is an apocalyptic number.

23012123 is a deficient number, since it is larger than the sum of its proper divisors (434245).

23012123 is an equidigital number, since it uses as much as digits as its factorization.

23012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434244.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23012123 is about 4797.0952669298. The cubic root of 23012123 is about 284.4366547154.

Adding to 23012123 its reverse (32121032), we get a palindrome (55133155).

The spelling of 23012123 in words is "twenty-three million, twelve thousand, one hundred twenty-three".