243350021443 has 2 divisors, whose sum is σ = 243350021444. Its totient is φ = 243350021442.

The previous prime is 243350021377. The next prime is 243350021503. The reversal of 243350021443 is 344120053342.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243350021443 - 2³⁷ = 105911067971 is a prime.

It is not a weakly prime, because it can be changed into another prime (243350021543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121675010721 + 121675010722.

It is an arithmetic number, because the mean of its divisors is an integer number (121675010722).

Almost surely, 2^243350021443 is an apocalyptic number.

243350021443 is a deficient number, since it is larger than the sum of its proper divisors (1).

243350021443 is an equidigital number, since it uses as much as digits as its factorization.

243350021443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 243350021443 its reverse (344120053342), we get a palindrome (587470074785).

The spelling of 243350021443 in words is "two hundred forty-three billion, three hundred fifty million, twenty-one thousand, four hundred forty-three".