10243309 has 2 divisors, whose sum is σ = 10243310. Its totient is φ = 10243308.

The previous prime is 10243291. The next prime is 10243357. The reversal of 10243309 is 90334201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10220809 + 22500 = 3197^2 + 150^2 .

It is a cyclic number.

It is not a de Polignac number, because 10243309 - 2¹¹ = 10241261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10243309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10243369) 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, 5121654 + 5121655.

It is an arithmetic number, because the mean of its divisors is an integer number (5121655).

Almost surely, 2^10243309 is an apocalyptic number.

It is an amenable number.

10243309 is a deficient number, since it is larger than the sum of its proper divisors (1).

10243309 is an equidigital number, since it uses as much as digits as its factorization.

10243309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 10243309 is about 3200.5169894878. The cubic root of 10243309 is about 217.1767974541.

The spelling of 10243309 in words is "ten million, two hundred forty-three thousand, three hundred nine".