123432103 has 2 divisors, whose sum is σ = 123432104. Its totient is φ = 123432102.

The previous prime is 123432083. The next prime is 123432131. The reversal of 123432103 is 301234321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123432103 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123432143) 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, 61716051 + 61716052.

It is an arithmetic number, because the mean of its divisors is an integer number (61716052).

Almost surely, 2^123432103 is an apocalyptic number.

123432103 is a deficient number, since it is larger than the sum of its proper divisors (1).

123432103 is an equidigital number, since it uses as much as digits as its factorization.

123432103 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 123432103 is about 11110.0001350135. Note that the first 3 decimals coincide. The cubic root of 123432103 is about 497.9006686184.

Adding to 123432103 its reverse (301234321), we get a palindrome (424666424).

The spelling of 123432103 in words is "one hundred twenty-three million, four hundred thirty-two thousand, one hundred three".