243104213543 has 2 divisors, whose sum is σ = 243104213544. Its totient is φ = 243104213542.

The previous prime is 243104213531. The next prime is 243104213567. The reversal of 243104213543 is 345312401342.

243104213543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243104213543 - 2⁶ = 243104213479 is a prime.

It is a super-2 number, since 2×243104213543² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243104213503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121552106771 + 121552106772.

It is an arithmetic number, because the mean of its divisors is an integer number (121552106772).

Almost surely, 2^243104213543 is an apocalyptic number.

243104213543 is a deficient number, since it is larger than the sum of its proper divisors (1).

243104213543 is an equidigital number, since it uses as much as digits as its factorization.

243104213543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 243104213543 its reverse (345312401342), we get a palindrome (588416614885).

The spelling of 243104213543 in words is "two hundred forty-three billion, one hundred four million, two hundred thirteen thousand, five hundred forty-three".