243212104423 has 2 divisors, whose sum is σ = 243212104424. Its totient is φ = 243212104422.

The previous prime is 243212104391. The next prime is 243212104433. The reversal of 243212104423 is 324401212342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243212104423 - 2⁵ = 243212104391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243212104391 and 243212104400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243212104433) 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, 121606052211 + 121606052212.

It is an arithmetic number, because the mean of its divisors is an integer number (121606052212).

Almost surely, 2^243212104423 is an apocalyptic number.

243212104423 is a deficient number, since it is larger than the sum of its proper divisors (1).

243212104423 is an equidigital number, since it uses as much as digits as its factorization.

243212104423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 243212104423 its reverse (324401212342), we get a palindrome (567613316765).

The spelling of 243212104423 in words is "two hundred forty-three billion, two hundred twelve million, one hundred four thousand, four hundred twenty-three".