123320103 has 4 divisors (see below), whose sum is σ = 164426808. Its totient is φ = 82213400.

The previous prime is 123320069. The next prime is 123320117. The reversal of 123320103 is 301023321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123320103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123320003) 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 in 3 ways as a sum of consecutive naturals, for example, 20553348 + ... + 20553353.

It is an arithmetic number, because the mean of its divisors is an integer number (41106702).

Almost surely, 2^123320103 is an apocalyptic number.

123320103 is a deficient number, since it is larger than the sum of its proper divisors (41106705).

123320103 is an equidigital number, since it uses as much as digits as its factorization.

123320103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41106704.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 123320103 is about 11104.9584870904. The cubic root of 123320103 is about 497.7500277702.

Adding to 123320103 its reverse (301023321), we get a palindrome (424343424).

The spelling of 123320103 in words is "one hundred twenty-three million, three hundred twenty thousand, one hundred three".