2312209 has 2 divisors, whose sum is σ = 2312210. Its totient is φ = 2312208.

The previous prime is 2312203. The next prime is 2312249. The reversal of 2312209 is 9022132.

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., 1782225 + 529984 = 1335^2 + 728^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312209 - 2³ = 2312201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2312201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156104 + 1156105.

It is an arithmetic number, because the mean of its divisors is an integer number (1156105).

2^2312209 is an apocalyptic number.

It is an amenable number.

2312209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312209 is an equidigital number, since it uses as much as digits as its factorization.

2312209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2312209 is about 1520.5949493537. The cubic root of 2312209 is about 132.2337646816.

The spelling of 2312209 in words is "two million, three hundred twelve thousand, two hundred nine".