243147103 has 2 divisors, whose sum is σ = 243147104. Its totient is φ = 243147102.

The previous prime is 243147077. The next prime is 243147109. The reversal of 243147103 is 301741342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243147103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243147109) 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, 121573551 + 121573552.

It is an arithmetic number, because the mean of its divisors is an integer number (121573552).

Almost surely, 2^243147103 is an apocalyptic number.

243147103 is a deficient number, since it is larger than the sum of its proper divisors (1).

243147103 is an equidigital number, since it uses as much as digits as its factorization.

243147103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 243147103 is about 15593.1748851861. The cubic root of 243147103 is about 624.1510419144.

Adding to 243147103 its reverse (301741342), we get a palindrome (544888445).

The spelling of 243147103 in words is "two hundred forty-three million, one hundred forty-seven thousand, one hundred three".