12311397839 has 4 divisors (see below), whose sum is σ = 13258428456. Its totient is φ = 11364367224.

The previous prime is 12311397829. The next prime is 12311397859. The reversal of 12311397839 is 93879311321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93879311321 = 69959 ⋅1341919.

It is a cyclic number.

It is not a de Polignac number, because 12311397839 - 2⁴ = 12311397823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12311397793 and 12311397802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311397829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473515289 + ... + 473515314.

It is an arithmetic number, because the mean of its divisors is an integer number (3314607114).

Almost surely, 2^12311397839 is an apocalyptic number.

12311397839 is a deficient number, since it is larger than the sum of its proper divisors (947030617).

12311397839 is an equidigital number, since it uses as much as digits as its factorization.

12311397839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947030616.

The product of its digits is 244944, while the sum is 47.

The spelling of 12311397839 in words is "twelve billion, three hundred eleven million, three hundred ninety-seven thousand, eight hundred thirty-nine".