243204302111 has 2 divisors, whose sum is σ = 243204302112. Its totient is φ = 243204302110.

The previous prime is 243204302083. The next prime is 243204302137. The reversal of 243204302111 is 111203402342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243204302111 - 2²² = 243200107807 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243204302161) 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, 121602151055 + 121602151056.

It is an arithmetic number, because the mean of its divisors is an integer number (121602151056).

Almost surely, 2^243204302111 is an apocalyptic number.

243204302111 is a deficient number, since it is larger than the sum of its proper divisors (1).

243204302111 is an equidigital number, since it uses as much as digits as its factorization.

243204302111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 243204302111 its reverse (111203402342), we get a palindrome (354407704453).

The spelling of 243204302111 in words is "two hundred forty-three billion, two hundred four million, three hundred two thousand, one hundred eleven".