12131244439 has 2 divisors, whose sum is σ = 12131244440. Its totient is φ = 12131244438.

The previous prime is 12131244397. The next prime is 12131244443. The reversal of 12131244439 is 93444213121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12131244439 - 2¹⁷ = 12131113367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12131244449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065622219 + 6065622220.

It is an arithmetic number, because the mean of its divisors is an integer number (6065622220).

Almost surely, 2^12131244439 is an apocalyptic number.

12131244439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131244439 is an equidigital number, since it uses as much as digits as its factorization.

12131244439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The spelling of 12131244439 in words is "twelve billion, one hundred thirty-one million, two hundred forty-four thousand, four hundred thirty-nine".