1312987288439 has 2 divisors, whose sum is σ = 1312987288440. Its totient is φ = 1312987288438.

The previous prime is 1312987288411. The next prime is 1312987288517. The reversal of 1312987288439 is 9348827892131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312987288439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312987288139) 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, 656493644219 + 656493644220.

It is an arithmetic number, because the mean of its divisors is an integer number (656493644220).

Almost surely, 2^{1312987288439} is an apocalyptic number.

1312987288439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312987288439 is an equidigital number, since it uses as much as digits as its factorization.

1312987288439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41803776, while the sum is 65.

The spelling of 1312987288439 in words is "one trillion, three hundred twelve billion, nine hundred eighty-seven million, two hundred eighty-eight thousand, four hundred thirty-nine".