243441043133 has 2 divisors, whose sum is σ = 243441043134. Its totient is φ = 243441043132.

The previous prime is 243441043127. The next prime is 243441043147. The reversal of 243441043133 is 331340144342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241392394489 + 2048648644 = 491317^2 + 45262^2 .

It is a cyclic number.

It is not a de Polignac number, because 243441043133 - 2¹⁰ = 243441042109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243441043133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243441343133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121720521566 + 121720521567.

It is an arithmetic number, because the mean of its divisors is an integer number (121720521567).

Almost surely, 2^243441043133 is an apocalyptic number.

It is an amenable number.

243441043133 is a deficient number, since it is larger than the sum of its proper divisors (1).

243441043133 is an equidigital number, since it uses as much as digits as its factorization.

243441043133 is an evil number, because the sum of its binary digits is even.

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

Adding to 243441043133 its reverse (331340144342), we get a palindrome (574781187475).

The spelling of 243441043133 in words is "two hundred forty-three billion, four hundred forty-one million, forty-three thousand, one hundred thirty-three".