1306409317 has 2 divisors, whose sum is σ = 1306409318. Its totient is φ = 1306409316.

The previous prime is 1306409297. The next prime is 1306409323. The reversal of 1306409317 is 7139046031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1043677636 + 262731681 = 32306^2 + 16209^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306409317 - 2¹¹ = 1306407269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1306409917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653204658 + 653204659.

It is an arithmetic number, because the mean of its divisors is an integer number (653204659).

Almost surely, 2^1306409317 is an apocalyptic number.

It is an amenable number.

1306409317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306409317 is an equidigital number, since it uses as much as digits as its factorization.

1306409317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 1306409317 is about 36144.2847072673. The cubic root of 1306409317 is about 1093.1835544769.

The spelling of 1306409317 in words is "one billion, three hundred six million, four hundred nine thousand, three hundred seventeen".