243241003 has 2 divisors, whose sum is σ = 243241004. Its totient is φ = 243241002.

The previous prime is 243241001. The next prime is 243241051. The reversal of 243241003 is 300142342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243241003 - 2¹ = 243241001 is a prime.

Together with 243241001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (243241001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121620501 + 121620502.

It is an arithmetic number, because the mean of its divisors is an integer number (121620502).

Almost surely, 2^243241003 is an apocalyptic number.

243241003 is a deficient number, since it is larger than the sum of its proper divisors (1).

243241003 is an equidigital number, since it uses as much as digits as its factorization.

243241003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 243241003 is about 15596.1855272371. The cubic root of 243241003 is about 624.2313776991.

Adding to 243241003 its reverse (300142342), we get a palindrome (543383345).

The spelling of 243241003 in words is "two hundred forty-three million, two hundred forty-one thousand, three".