12031333213 has 4 divisors (see below), whose sum is σ = 12419440768. Its totient is φ = 11643225660.

The previous prime is 12031333207. The next prime is 12031333219. The reversal of 12031333213 is 31233313021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12031333207) and next prime (12031333219).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12031333213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031333219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194053731 + ... + 194053792.

It is an arithmetic number, because the mean of its divisors is an integer number (3104860192).

Almost surely, 2^12031333213 is an apocalyptic number.

It is an amenable number.

12031333213 is a deficient number, since it is larger than the sum of its proper divisors (388107555).

12031333213 is an equidigital number, since it uses as much as digits as its factorization.

12031333213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388107554.

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

Adding to 12031333213 its reverse (31233313021), we get a palindrome (43264646234).

The spelling of 12031333213 in words is "twelve billion, thirty-one million, three hundred thirty-three thousand, two hundred thirteen".