2210309 has 2 divisors, whose sum is σ = 2210310. Its totient is φ = 2210308.

The previous prime is 2210303. The next prime is 2210321. The reversal of 2210309 is 9030122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1716100 + 494209 = 1310^2 + 703^2 .

It is a cyclic number.

It is not a de Polignac number, because 2210309 - 2⁸ = 2210053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2210303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105154 + 1105155.

It is an arithmetic number, because the mean of its divisors is an integer number (1105155).

2^2210309 is an apocalyptic number.

It is an amenable number.

2210309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210309 is an equidigital number, since it uses as much as digits as its factorization.

2210309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2210309 is about 1486.7107990460. The cubic root of 2210309 is about 130.2619766397.

The spelling of 2210309 in words is "two million, two hundred ten thousand, three hundred nine".