12131302439 has 2 divisors, whose sum is σ = 12131302440. Its totient is φ = 12131302438.

The previous prime is 12131302411. The next prime is 12131302501. The reversal of 12131302439 is 93420313121.

It is a weak prime.

It is an emirp because it is prime and its reverse (93420313121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12131302439 - 2²⁴ = 12114525223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12131302639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065651219 + 6065651220.

It is an arithmetic number, because the mean of its divisors is an integer number (6065651220).

Almost surely, 2^12131302439 is an apocalyptic number.

12131302439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131302439 is an equidigital number, since it uses as much as digits as its factorization.

12131302439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 12131302439 in words is "twelve billion, one hundred thirty-one million, three hundred two thousand, four hundred thirty-nine".