243003413 has 2 divisors, whose sum is σ = 243003414. Its totient is φ = 243003412.

The previous prime is 243003377. The next prime is 243003421. The reversal of 243003413 is 314300342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206726884 + 36276529 = 14378^2 + 6023^2 .

It is a cyclic number.

It is not a de Polignac number, because 243003413 - 2⁸ = 243003157 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243003473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121501706 + 121501707.

It is an arithmetic number, because the mean of its divisors is an integer number (121501707).

Almost surely, 2^243003413 is an apocalyptic number.

It is an amenable number.

243003413 is a deficient number, since it is larger than the sum of its proper divisors (1).

243003413 is an equidigital number, since it uses as much as digits as its factorization.

243003413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 243003413 is about 15588.5667397615. The cubic root of 243003413 is about 624.0280684353.

Adding to 243003413 its reverse (314300342), we get a palindrome (557303755).

The spelling of 243003413 in words is "two hundred forty-three million, three thousand, four hundred thirteen".