1313492309 has 2 divisors, whose sum is σ = 1313492310. Its totient is φ = 1313492308.

The previous prime is 1313492281. The next prime is 1313492317. The reversal of 1313492309 is 9032943131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1256489809 + 57002500 = 35447^2 + 7550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313492309 - 2²⁴ = 1296715093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313492339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656746154 + 656746155.

It is an arithmetic number, because the mean of its divisors is an integer number (656746155).

Almost surely, 2^1313492309 is an apocalyptic number.

It is an amenable number.

1313492309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313492309 is an equidigital number, since it uses as much as digits as its factorization.

1313492309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 1313492309 is about 36242.1344432140. The cubic root of 1313492309 is about 1095.1556415753.

The spelling of 1313492309 in words is "one billion, three hundred thirteen million, four hundred ninety-two thousand, three hundred nine".