12331211311 has 4 divisors (see below), whose sum is σ = 12444341800. Its totient is φ = 12218080824.

The previous prime is 12331211309. The next prime is 12331211317. The reversal of 12331211311 is 11311213321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11311213321 = 3823 ⋅2958727.

It is a cyclic number.

It is not a de Polignac number, because 12331211311 - 2¹ = 12331211309 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 (12331211317) 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, 56565081 + ... + 56565298.

It is an arithmetic number, because the mean of its divisors is an integer number (3111085450).

Almost surely, 2^12331211311 is an apocalyptic number.

12331211311 is a deficient number, since it is larger than the sum of its proper divisors (113130489).

12331211311 is a wasteful number, since it uses less digits than its factorization.

12331211311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113130488.

The product of its digits is 108, while the sum is 19.

Adding to 12331211311 its reverse (11311213321), we get a palindrome (23642424632).

The spelling of 12331211311 in words is "twelve billion, three hundred thirty-one million, two hundred eleven thousand, three hundred eleven".