12031320233 has 4 divisors (see below), whose sum is σ = 12034278228. Its totient is φ = 12028362240.

The previous prime is 12031320221. The next prime is 12031320251. The reversal of 12031320233 is 33202313021.

12031320233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2204959849 + 9826360384 = 46957^2 + 99128^2 .

It is a cyclic number.

It is not a de Polignac number, because 12031320233 - 2¹² = 12031316137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12031326233) 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 3 ways as a sum of consecutive naturals, for example, 1472888 + ... + 1481033.

It is an arithmetic number, because the mean of its divisors is an integer number (3008569557).

Almost surely, 2^12031320233 is an apocalyptic number.

It is an amenable number.

12031320233 is a deficient number, since it is larger than the sum of its proper divisors (2957995).

12031320233 is an equidigital number, since it uses as much as digits as its factorization.

12031320233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957994.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 12031320233 its reverse (33202313021), we get a palindrome (45233633254).

The spelling of 12031320233 in words is "twelve billion, thirty-one million, three hundred twenty thousand, two hundred thirty-three".