123321103 has 2 divisors, whose sum is σ = 123321104. Its totient is φ = 123321102.

The previous prime is 123321097. The next prime is 123321113. The reversal of 123321103 is 301123321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123321103 - 2¹⁷ = 123190031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123321113) 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, 61660551 + 61660552.

It is an arithmetic number, because the mean of its divisors is an integer number (61660552).

Almost surely, 2^123321103 is an apocalyptic number.

123321103 is a deficient number, since it is larger than the sum of its proper divisors (1).

123321103 is an equidigital number, since it uses as much as digits as its factorization.

123321103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 123321103 is about 11105.0035119310. The cubic root of 123321103 is about 497.7513731812.

Adding to 123321103 its reverse (301123321), we get a palindrome (424444424).

The spelling of 123321103 in words is "one hundred twenty-three million, three hundred twenty-one thousand, one hundred three".