23211020123 has 4 divisors (see below), whose sum is σ = 23228512800. Its totient is φ = 23193527448.

The previous prime is 23211020113. The next prime is 23211020149. The reversal of 23211020123 is 32102011232.

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 23211020123 - 2³⁰ = 22137278299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23211020113) 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, 8744348 + ... + 8747001.

It is an arithmetic number, because the mean of its divisors is an integer number (5807128200).

Almost surely, 2^23211020123 is an apocalyptic number.

23211020123 is a deficient number, since it is larger than the sum of its proper divisors (17492677).

23211020123 is a wasteful number, since it uses less digits than its factorization.

23211020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17492676.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23211020123 its reverse (32102011232), we get a palindrome (55313031355).

The spelling of 23211020123 in words is "twenty-three billion, two hundred eleven million, twenty thousand, one hundred twenty-three".