23123213321 has 16 divisors (see below), whose sum is σ = 25499132736. Its totient is φ = 20833315776.

The previous prime is 23123213287. The next prime is 23123213327. The reversal of 23123213321 is 12331232132.

It is not a de Polignac number, because 23123213321 - 2²⁶ = 23056104457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23123213327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815051 + ... + 842943.

It is an arithmetic number, because the mean of its divisors is an integer number (1593695796).

Almost surely, 2^23123213321 is an apocalyptic number.

It is an amenable number.

23123213321 is a deficient number, since it is larger than the sum of its proper divisors (2375919415).

23123213321 is a wasteful number, since it uses less digits than its factorization.

23123213321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29432.

The product of its digits is 1296, while the sum is 23.

Adding to 23123213321 its reverse (12331232132), we get a palindrome (35454445453).

The spelling of 23123213321 in words is "twenty-three billion, one hundred twenty-three million, two hundred thirteen thousand, three hundred twenty-one".