243302421133 has 2 divisors, whose sum is σ = 243302421134. Its totient is φ = 243302421132.

The previous prime is 243302421127. The next prime is 243302421139. The reversal of 243302421133 is 331124203342.

It is a happy number.

243302421133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (243302421127) and next prime (243302421139).

It can be written as a sum of positive squares in only one way, i.e., 237844462249 + 5457958884 = 487693^2 + 73878^2 .

It is a cyclic number.

It is not a de Polignac number, because 243302421133 - 2⁵ = 243302421101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243302421139) 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, 121651210566 + 121651210567.

It is an arithmetic number, because the mean of its divisors is an integer number (121651210567).

Almost surely, 2^243302421133 is an apocalyptic number.

It is an amenable number.

243302421133 is a deficient number, since it is larger than the sum of its proper divisors (1).

243302421133 is an equidigital number, since it uses as much as digits as its factorization.

243302421133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 243302421133 its reverse (331124203342), we get a palindrome (574426624475).

The spelling of 243302421133 in words is "two hundred forty-three billion, three hundred two million, four hundred twenty-one thousand, one hundred thirty-three".