243232221143 has 2 divisors, whose sum is σ = 243232221144. Its totient is φ = 243232221142.

The previous prime is 243232221137. The next prime is 243232221233. The reversal of 243232221143 is 341122232342.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243232221143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243232221443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121616110571 + 121616110572.

It is an arithmetic number, because the mean of its divisors is an integer number (121616110572).

Almost surely, 2^243232221143 is an apocalyptic number.

243232221143 is a deficient number, since it is larger than the sum of its proper divisors (1).

243232221143 is an equidigital number, since it uses as much as digits as its factorization.

243232221143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 29.

Adding to 243232221143 its reverse (341122232342), we get a palindrome (584354453485).

The spelling of 243232221143 in words is "two hundred forty-three billion, two hundred thirty-two million, two hundred twenty-one thousand, one hundred forty-three".