2270309 has 2 divisors, whose sum is σ = 2270310. Its totient is φ = 2270308.

The previous prime is 2270297. The next prime is 2270311. The reversal of 2270309 is 9030722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1329409 + 940900 = 1153^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 2270309 - 2¹⁶ = 2204773 is a prime.

It is a Sophie Germain prime.

Together with 2270311, it forms a pair of twin primes.

It is a Chen 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 (2270339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135154 + 1135155.

It is an arithmetic number, because the mean of its divisors is an integer number (1135155).

2^2270309 is an apocalyptic number.

It is an amenable number.

2270309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2270309 is an equidigital number, since it uses as much as digits as its factorization.

2270309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 2270309 is about 1506.7544590941. The cubic root of 2270309 is about 131.4301459776.

The spelling of 2270309 in words is "two million, two hundred seventy thousand, three hundred nine".