12033313231 has 2 divisors, whose sum is σ = 12033313232. Its totient is φ = 12033313230.

The previous prime is 12033313223. The next prime is 12033313241. The reversal of 12033313231 is 13231333021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12033313231 - 2³ = 12033313223 is a prime.

It is a super-2 number, since 2×12033313231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12033313241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6016656615 + 6016656616.

It is an arithmetic number, because the mean of its divisors is an integer number (6016656616).

Almost surely, 2^12033313231 is an apocalyptic number.

12033313231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12033313231 is an equidigital number, since it uses as much as digits as its factorization.

12033313231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 12033313231 its reverse (13231333021), we get a palindrome (25264646252).

The spelling of 12033313231 in words is "twelve billion, thirty-three million, three hundred thirteen thousand, two hundred thirty-one".