243203341 has 2 divisors, whose sum is σ = 243203342. Its totient is φ = 243203340.

The previous prime is 243203327. The next prime is 243203371. The reversal of 243203341 is 143302342.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241678116 + 1525225 = 15546^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 243203341 - 2²³ = 234814733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243203371) 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, 121601670 + 121601671.

It is an arithmetic number, because the mean of its divisors is an integer number (121601671).

Almost surely, 2^243203341 is an apocalyptic number.

It is an amenable number.

243203341 is a deficient number, since it is larger than the sum of its proper divisors (1).

243203341 is an equidigital number, since it uses as much as digits as its factorization.

243203341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 243203341 is about 15594.9780698788. The cubic root of 243203341 is about 624.1991586032.

Adding to 243203341 its reverse (143302342), we get a palindrome (386505683).

Subtracting from 243203341 its reverse (143302342), we obtain a palindrome (99900999).

The spelling of 243203341 in words is "two hundred forty-three million, two hundred three thousand, three hundred forty-one".