1300309 has 2 divisors, whose sum is σ = 1300310. Its totient is φ = 1300308.

The previous prime is 1300307. The next prime is 1300319. The reversal of 1300309 is 9030031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1276900 + 23409 = 1130^2 + 153^2 .

It is an emirp because it is prime and its reverse (9030031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1300309 - 2¹ = 1300307 is a prime.

Together with 1300307, it forms a pair of twin primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1300292 and 1300301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1300307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650154 + 650155.

It is an arithmetic number, because the mean of its divisors is an integer number (650155).

2^1300309 is an apocalyptic number.

It is an amenable number.

1300309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300309 is an equidigital number, since it uses as much as digits as its factorization.

1300309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 1300309 is about 1140.3109225119. The cubic root of 1300309 is about 109.1479348108.

The spelling of 1300309 in words is "one million, three hundred thousand, three hundred nine".