12131231339 has 2 divisors, whose sum is σ = 12131231340. Its totient is φ = 12131231338.

The previous prime is 12131231293. The next prime is 12131231341. The reversal of 12131231339 is 93313213121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12131231339 - 2¹² = 12131227243 is a prime.

Together with 12131231341, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12131230339) 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 as a sum of consecutive naturals, namely, 6065615669 + 6065615670.

It is an arithmetic number, because the mean of its divisors is an integer number (6065615670).

Almost surely, 2^12131231339 is an apocalyptic number.

12131231339 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131231339 is an equidigital number, since it uses as much as digits as its factorization.

12131231339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 29.

The spelling of 12131231339 in words is "twelve billion, one hundred thirty-one million, two hundred thirty-one thousand, three hundred thirty-nine".