243441322133 has 2 divisors, whose sum is σ = 243441322134. Its totient is φ = 243441322132.

The previous prime is 243441322081. The next prime is 243441322147. The reversal of 243441322133 is 331223144342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177524867569 + 65916454564 = 421337^2 + 256742^2 .

It is a cyclic number.

It is not a de Polignac number, because 243441322133 - 2¹⁴ = 243441305749 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 243441322133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243441327133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121720661066 + 121720661067.

It is an arithmetic number, because the mean of its divisors is an integer number (121720661067).

Almost surely, 2^243441322133 is an apocalyptic number.

It is an amenable number.

243441322133 is a deficient number, since it is larger than the sum of its proper divisors (1).

243441322133 is an equidigital number, since it uses as much as digits as its factorization.

243441322133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 32.

Adding to 243441322133 its reverse (331223144342), we get a palindrome (574664466475).

The spelling of 243441322133 in words is "two hundred forty-three billion, four hundred forty-one million, three hundred twenty-two thousand, one hundred thirty-three".