12311311231133 has 4 divisors (see below), whose sum is σ = 12959274980160. Its totient is φ = 11663347482108.

The previous prime is 12311311231129. The next prime is 12311311231139. The reversal of 12311311231133 is 33113211311321.

12311311231133 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12311311231133 - 2² = 12311311231129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311311231139) 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, 323981874485 + ... + 323981874522.

It is an arithmetic number, because the mean of its divisors is an integer number (3239818745040).

Almost surely, 2^{12311311231133} is an apocalyptic number.

It is an amenable number.

12311311231133 is a deficient number, since it is larger than the sum of its proper divisors (647963749027).

12311311231133 is an equidigital number, since it uses as much as digits as its factorization.

12311311231133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647963749026.

The product of its digits is 972, while the sum is 26.

Adding to 12311311231133 its reverse (33113211311321), we get a palindrome (45424522542454).

The spelling of 12311311231133 in words is "twelve trillion, three hundred eleven billion, three hundred eleven million, two hundred thirty-one thousand, one hundred thirty-three".