123103243 has 2 divisors, whose sum is σ = 123103244. Its totient is φ = 123103242.

The previous prime is 123103219. The next prime is 123103271. The reversal of 123103243 is 342301321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123103243 - 2⁹ = 123102731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123103243.

It is not a weakly prime, because it can be changed into another prime (123103283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61551621 + 61551622.

It is an arithmetic number, because the mean of its divisors is an integer number (61551622).

Almost surely, 2^123103243 is an apocalyptic number.

123103243 is a deficient number, since it is larger than the sum of its proper divisors (1).

123103243 is an equidigital number, since it uses as much as digits as its factorization.

123103243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 123103243 is about 11095.1900839959. The cubic root of 123103243 is about 497.4580899520.

Adding to 123103243 its reverse (342301321), we get a palindrome (465404564).

The spelling of 123103243 in words is "one hundred twenty-three million, one hundred three thousand, two hundred forty-three".