23311233121 has 16 divisors (see below), whose sum is σ = 25682443200. Its totient is φ = 20982930880.

The previous prime is 23311233097. The next prime is 23311233137. The reversal of 23311233121 is 12133211332.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23311233121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23311233092 and 23311233101.

It is not an unprimeable number, because it can be changed into a prime (23311233161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497130 + ... + 541996.

It is an arithmetic number, because the mean of its divisors is an integer number (1605152700).

Almost surely, 2^23311233121 is an apocalyptic number.

It is an amenable number.

23311233121 is a deficient number, since it is larger than the sum of its proper divisors (2371210079).

23311233121 is a wasteful number, since it uses less digits than its factorization.

23311233121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45344.

The product of its digits is 648, while the sum is 22.

Adding to 23311233121 its reverse (12133211332), we get a palindrome (35444444453).

The spelling of 23311233121 in words is "twenty-three billion, three hundred eleven million, two hundred thirty-three thousand, one hundred twenty-one".