12033323231 has 16 divisors (see below), whose sum is σ = 12894940800. Its totient is φ = 11189004288.

The previous prime is 12033323221. The next prime is 12033323251. The reversal of 12033323231 is 13232333021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12033323231 is a prime.

It is a super-2 number, since 2×12033323231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12033323197 and 12033323206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12033323221) 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, 2431946 + ... + 2436888.

It is an arithmetic number, because the mean of its divisors is an integer number (805933800).

Almost surely, 2^12033323231 is an apocalyptic number.

12033323231 is a deficient number, since it is larger than the sum of its proper divisors (861617569).

12033323231 is a wasteful number, since it uses less digits than its factorization.

12033323231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6658.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 12033323231 its reverse (13232333021), we get a palindrome (25265656252).

The spelling of 12033323231 in words is "twelve billion, thirty-three million, three hundred twenty-three thousand, two hundred thirty-one".