1323231442369 has 2 divisors, whose sum is σ = 1323231442370. Its totient is φ = 1323231442368.

The previous prime is 1323231442333. The next prime is 1323231442381. The reversal of 1323231442369 is 9632441323231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 802928899969 + 520302542400 = 896063^2 + 721320^2 .

It is an emirp because it is prime and its reverse (9632441323231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323231442369 - 2⁷ = 1323231442241 is a prime.

It is a super-2 number, since 2×1323231442369² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1323231142369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661615721184 + 661615721185.

It is an arithmetic number, because the mean of its divisors is an integer number (661615721185).

Almost surely, 2^{1323231442369} is an apocalyptic number.

It is an amenable number.

1323231442369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323231442369 is an equidigital number, since it uses as much as digits as its factorization.

1323231442369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 43.

The spelling of 1323231442369 in words is "one trillion, three hundred twenty-three billion, two hundred thirty-one million, four hundred forty-two thousand, three hundred sixty-nine".