123321003 has 16 divisors (see below), whose sum is σ = 177305856. Its totient is φ = 75791520.

The previous prime is 123320999. The next prime is 123321041. The reversal of 123321003 is 300123321.

It is not a de Polignac number, because 123321003 - 2² = 123320999 is a prime.

It is a super-3 number, since 3×123321003³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (123321053) 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 15 ways as a sum of consecutive naturals, for example, 38676 + ... + 41742.

It is an arithmetic number, because the mean of its divisors is an integer number (11081616).

Almost surely, 2^123321003 is an apocalyptic number.

123321003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123321003 is a deficient number, since it is larger than the sum of its proper divisors (53984853).

123321003 is a wasteful number, since it uses less digits than its factorization.

123321003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114.

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

The square root of 123321003 is about 11104.9990094552. Note that the first 3 decimals coincide. The cubic root of 123321003 is about 497.7512386405.

Adding to 123321003 its reverse (300123321), we get a palindrome (423444324).

The spelling of 123321003 in words is "one hundred twenty-three million, three hundred twenty-one thousand, three".