243243230143 has 2 divisors, whose sum is σ = 243243230144. Its totient is φ = 243243230142.

The previous prime is 243243230129. The next prime is 243243230161. The reversal of 243243230143 is 341032342342.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243243230143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243243230183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121621615071 + 121621615072.

It is an arithmetic number, because the mean of its divisors is an integer number (121621615072).

Almost surely, 2^243243230143 is an apocalyptic number.

243243230143 is a deficient number, since it is larger than the sum of its proper divisors (1).

243243230143 is an equidigital number, since it uses as much as digits as its factorization.

243243230143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 243243230143 its reverse (341032342342), we get a palindrome (584275572485).

The spelling of 243243230143 in words is "two hundred forty-three billion, two hundred forty-three million, two hundred thirty thousand, one hundred forty-three".