12311311231199 has 4 divisors (see below), whose sum is σ = 12350148175464. Its totient is φ = 12272474286936.

The previous prime is 12311311231147. The next prime is 12311311231201. The reversal of 12311311231199 is 99113211311321.

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

It is a cyclic number.

It is not a de Polignac number, because 12311311231199 - 2²⁸ = 12311042795743 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 (12311311231129) 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, 19418471657 + ... + 19418472290.

It is an arithmetic number, because the mean of its divisors is an integer number (3087537043866).

Almost surely, 2^{12311311231199} is an apocalyptic number.

12311311231199 is a deficient number, since it is larger than the sum of its proper divisors (38836944265).

12311311231199 is an equidigital number, since it uses as much as digits as its factorization.

12311311231199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38836944264.

The product of its digits is 8748, while the sum is 38.

The spelling of 12311311231199 in words is "twelve trillion, three hundred eleven billion, three hundred eleven million, two hundred thirty-one thousand, one hundred ninety-nine".