1312642613 has 2 divisors, whose sum is σ = 1312642614. Its totient is φ = 1312642612.

The previous prime is 1312642603. The next prime is 1312642651. The reversal of 1312642613 is 3162462131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1154436529 + 158206084 = 33977^2 + 12578^2 .

It is an emirp because it is prime and its reverse (3162462131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312642613 - 2⁶ = 1312642549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312642603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656321306 + 656321307.

It is an arithmetic number, because the mean of its divisors is an integer number (656321307).

Almost surely, 2^1312642613 is an apocalyptic number.

It is an amenable number.

1312642613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312642613 is an equidigital number, since it uses as much as digits as its factorization.

1312642613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 1312642613 is about 36230.4100584026. The cubic root of 1312642613 is about 1094.9194391779.

The spelling of 1312642613 in words is "one billion, three hundred twelve million, six hundred forty-two thousand, six hundred thirteen".