243043030213 has 2 divisors, whose sum is σ = 243043030214. Its totient is φ = 243043030212.

The previous prime is 243043030207. The next prime is 243043030249. The reversal of 243043030213 is 312030340342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172176863364 + 70866166849 = 414942^2 + 266207^2 .

It is a cyclic number.

It is not a de Polignac number, because 243043030213 - 2⁹ = 243043029701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243043033213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121521515106 + 121521515107.

It is an arithmetic number, because the mean of its divisors is an integer number (121521515107).

Almost surely, 2^243043030213 is an apocalyptic number.

It is an amenable number.

243043030213 is a deficient number, since it is larger than the sum of its proper divisors (1).

243043030213 is an equidigital number, since it uses as much as digits as its factorization.

243043030213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 243043030213 its reverse (312030340342), we get a palindrome (555073370555).

The spelling of 243043030213 in words is "two hundred forty-three billion, forty-three million, thirty thousand, two hundred thirteen".