1313224321309 has 2 divisors, whose sum is σ = 1313224321310. Its totient is φ = 1313224321308.

The previous prime is 1313224321307. The next prime is 1313224321351. The reversal of 1313224321309 is 9031234223131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1147801536025 + 165422785284 = 1071355^2 + 406722^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313224321309 - 2¹ = 1313224321307 is a prime.

Together with 1313224321307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313224321307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656612160654 + 656612160655.

It is an arithmetic number, because the mean of its divisors is an integer number (656612160655).

Almost surely, 2^{1313224321309} is an apocalyptic number.

It is an amenable number.

1313224321309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313224321309 is an equidigital number, since it uses as much as digits as its factorization.

1313224321309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 34.

The spelling of 1313224321309 in words is "one trillion, three hundred thirteen billion, two hundred twenty-four million, three hundred twenty-one thousand, three hundred nine".