243383009 has 2 divisors, whose sum is σ = 243383010. Its totient is φ = 243383008.

The previous prime is 243382981. The next prime is 243383017. The reversal of 243383009 is 900383342.

It is a happy number.

243383009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206209600 + 37173409 = 14360^2 + 6097^2 .

It is a cyclic number.

It is not a de Polignac number, because 243383009 - 2¹² = 243378913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (243383029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121691504 + 121691505.

It is an arithmetic number, because the mean of its divisors is an integer number (121691505).

Almost surely, 2^243383009 is an apocalyptic number.

It is an amenable number.

243383009 is a deficient number, since it is larger than the sum of its proper divisors (1).

243383009 is an equidigital number, since it uses as much as digits as its factorization.

243383009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 243383009 is about 15600.7374505182. The cubic root of 243383009 is about 624.3528311205.

The spelling of 243383009 in words is "two hundred forty-three million, three hundred eighty-three thousand, nine".