12031331333 has 4 divisors (see below), whose sum is σ = 13750092960. Its totient is φ = 10312569708.

The previous prime is 12031331327. The next prime is 12031331357. The reversal of 12031331333 is 33313313021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33313313021 = 283 ⋅117714887.

It is not a de Polignac number, because 12031331333 - 2²⁰ = 12030282757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12031331299 and 12031331308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031333333) 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, 859380803 + ... + 859380816.

It is an arithmetic number, because the mean of its divisors is an integer number (3437523240).

Almost surely, 2^12031331333 is an apocalyptic number.

It is an amenable number.

12031331333 is a deficient number, since it is larger than the sum of its proper divisors (1718761627).

12031331333 is an equidigital number, since it uses as much as digits as its factorization.

12031331333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718761626.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 12031331333 its reverse (33313313021), we get a palindrome (45344644354).

The spelling of 12031331333 in words is "twelve billion, thirty-one million, three hundred thirty-one thousand, three hundred thirty-three".