1312320213313 has 2 divisors, whose sum is σ = 1312320213314. Its totient is φ = 1312320213312.

The previous prime is 1312320213229. The next prime is 1312320213319. The reversal of 1312320213313 is 3133120232131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1226396775184 + 85923438129 = 1107428^2 + 293127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312320213313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312320213319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656160106656 + 656160106657.

It is an arithmetic number, because the mean of its divisors is an integer number (656160106657).

Almost surely, 2^{1312320213313} is an apocalyptic number.

It is an amenable number.

1312320213313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312320213313 is an equidigital number, since it uses as much as digits as its factorization.

1312320213313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1312320213313 its reverse (3133120232131), we get a palindrome (4445440445444).

The spelling of 1312320213313 in words is "one trillion, three hundred twelve billion, three hundred twenty million, two hundred thirteen thousand, three hundred thirteen".