23123123 has 4 divisors (see below), whose sum is σ = 23139120. Its totient is φ = 23107128.

The previous prime is 23123071. The next prime is 23123143. The reversal of 23123123 is 32132132.

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 23123123 - 2¹⁸ = 22860979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23123143) 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, 5588 + ... + 8801.

It is an arithmetic number, because the mean of its divisors is an integer number (5784780).

Almost surely, 2^23123123 is an apocalyptic number.

23123123 is a deficient number, since it is larger than the sum of its proper divisors (15997).

23123123 is a wasteful number, since it uses less digits than its factorization.

23123123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15996.

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

The square root of 23123123 is about 4808.6508502905. The cubic root of 23123123 is about 284.8932523174.

Adding to 23123123 its reverse (32132132), we get a palindrome (55255255).

Subtracting 23123123 from its reverse (32132132), we obtain a palindrome (9009009).

The spelling of 23123123 in words is "twenty-three million, one hundred twenty-three thousand, one hundred twenty-three".