243143434213 has 2 divisors, whose sum is σ = 243143434214. Its totient is φ = 243143434212.

The previous prime is 243143434153. The next prime is 243143434223. The reversal of 243143434213 is 312434341342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212873349924 + 30270084289 = 461382^2 + 173983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243143434213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243143434223) 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, 121571717106 + 121571717107.

It is an arithmetic number, because the mean of its divisors is an integer number (121571717107).

Almost surely, 2^243143434213 is an apocalyptic number.

It is an amenable number.

243143434213 is a deficient number, since it is larger than the sum of its proper divisors (1).

243143434213 is an equidigital number, since it uses as much as digits as its factorization.

243143434213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 34.

Adding to 243143434213 its reverse (312434341342), we get a palindrome (555577775555).

The spelling of 243143434213 in words is "two hundred forty-three billion, one hundred forty-three million, four hundred thirty-four thousand, two hundred thirteen".