243123354011 has 2 divisors, whose sum is σ = 243123354012. Its totient is φ = 243123354010.

The previous prime is 243123353969. The next prime is 243123354029. The reversal of 243123354011 is 110453321342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243123354011 - 2¹⁴ = 243123337627 is a prime.

It is not a weakly prime, because it can be changed into another prime (243123354511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121561677005 + 121561677006.

It is an arithmetic number, because the mean of its divisors is an integer number (121561677006).

Almost surely, 2^243123354011 is an apocalyptic number.

243123354011 is a deficient number, since it is larger than the sum of its proper divisors (1).

243123354011 is an equidigital number, since it uses as much as digits as its factorization.

243123354011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 243123354011 its reverse (110453321342), we get a palindrome (353576675353).

The spelling of 243123354011 in words is "two hundred forty-three billion, one hundred twenty-three million, three hundred fifty-four thousand, eleven".