1311232444139 has 2 divisors, whose sum is σ = 1311232444140. Its totient is φ = 1311232444138.

The previous prime is 1311232444133. The next prime is 1311232444177. The reversal of 1311232444139 is 9314442321131.

It is an a-pointer prime, because the next prime (1311232444177) can be obtained adding 1311232444139 to its sum of digits (38).

It is a weak prime.

It is an emirp because it is prime and its reverse (9314442321131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311232444139 - 2¹² = 1311232440043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311232444133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655616222069 + 655616222070.

It is an arithmetic number, because the mean of its divisors is an integer number (655616222070).

Almost surely, 2^{1311232444139} is an apocalyptic number.

1311232444139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311232444139 is an equidigital number, since it uses as much as digits as its factorization.

1311232444139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The spelling of 1311232444139 in words is "one trillion, three hundred eleven billion, two hundred thirty-two million, four hundred forty-four thousand, one hundred thirty-nine".