243023035009 has 2 divisors, whose sum is σ = 243023035010. Its totient is φ = 243023035008.

The previous prime is 243023034979. The next prime is 243023035019. The reversal of 243023035009 is 900530320342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227192362609 + 15830672400 = 476647^2 + 125820^2 .

It is a cyclic number.

It is not a de Polignac number, because 243023035009 - 2¹¹ = 243023032961 is a prime.

It is not a weakly prime, because it can be changed into another prime (243023035019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121511517504 + 121511517505.

It is an arithmetic number, because the mean of its divisors is an integer number (121511517505).

Almost surely, 2^243023035009 is an apocalyptic number.

It is an amenable number.

243023035009 is a deficient number, since it is larger than the sum of its proper divisors (1).

243023035009 is an equidigital number, since it uses as much as digits as its factorization.

243023035009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 31.

The spelling of 243023035009 in words is "two hundred forty-three billion, twenty-three million, thirty-five thousand, nine".