2372309 has 2 divisors, whose sum is σ = 2372310. Its totient is φ = 2372308.

The previous prime is 2372303. The next prime is 2372317. The reversal of 2372309 is 9032732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1464100 + 908209 = 1210^2 + 953^2 .

It is a cyclic number.

It is not a de Polignac number, because 2372309 - 2⁸ = 2372053 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 (2372303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1186154 + 1186155.

It is an arithmetic number, because the mean of its divisors is an integer number (1186155).

2^2372309 is an apocalyptic number.

It is an amenable number.

2372309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2372309 is an equidigital number, since it uses as much as digits as its factorization.

2372309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 2372309 is about 1540.2301776033. The cubic root of 2372309 is about 133.3696727338.

The spelling of 2372309 in words is "two million, three hundred seventy-two thousand, three hundred nine".