243241143533 has 2 divisors, whose sum is σ = 243241143534. Its totient is φ = 243241143532.

The previous prime is 243241143491. The next prime is 243241143577. The reversal of 243241143533 is 335341142342.

243241143533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136649994244 + 106591149289 = 369662^2 + 326483^2 .

It is a cyclic number.

It is not a de Polignac number, because 243241143533 - 2¹⁰ = 243241142509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243241143493 and 243241143502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243241145533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121620571766 + 121620571767.

It is an arithmetic number, because the mean of its divisors is an integer number (121620571767).

Almost surely, 2^243241143533 is an apocalyptic number.

It is an amenable number.

243241143533 is a deficient number, since it is larger than the sum of its proper divisors (1).

243241143533 is an equidigital number, since it uses as much as digits as its factorization.

243241143533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 35.

Adding to 243241143533 its reverse (335341142342), we get a palindrome (578582285875).

The spelling of 243241143533 in words is "two hundred forty-three billion, two hundred forty-one million, one hundred forty-three thousand, five hundred thirty-three".