23311020123 has 6 divisors (see below), whose sum is σ = 33671473524. Its totient is φ = 15540680076.

The previous prime is 23311020101. The next prime is 23311020137. The reversal of 23311020123 is 32102011332.

It is not a de Polignac number, because 23311020123 - 2²⁸ = 23042584667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23311020096 and 23311020105.

It is not an unprimeable number, because it can be changed into a prime (23311020193) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1295056665 + ... + 1295056682.

It is an arithmetic number, because the mean of its divisors is an integer number (5611912254).

Almost surely, 2^23311020123 is an apocalyptic number.

23311020123 is a deficient number, since it is larger than the sum of its proper divisors (10360453401).

23311020123 is a wasteful number, since it uses less digits than its factorization.

23311020123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590113353 (or 2590113350 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23311020123 its reverse (32102011332), we get a palindrome (55413031455).

The spelling of 23311020123 in words is "twenty-three billion, three hundred eleven million, twenty thousand, one hundred twenty-three".