1306996013 has 2 divisors, whose sum is σ = 1306996014. Its totient is φ = 1306996012.

The previous prime is 1306995967. The next prime is 1306996049. The reversal of 1306996013 is 3106996031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1157496484 + 149499529 = 34022^2 + 12227^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306996013 - 2⁸ = 1306995757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1306996063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653498006 + 653498007.

It is an arithmetic number, because the mean of its divisors is an integer number (653498007).

Almost surely, 2^1306996013 is an apocalyptic number.

It is an amenable number.

1306996013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306996013 is an equidigital number, since it uses as much as digits as its factorization.

1306996013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 1306996013 is about 36152.3998235249. The cubic root of 1306996013 is about 1093.3471760984.

The spelling of 1306996013 in words is "one billion, three hundred six million, nine hundred ninety-six thousand, thirteen".