123403321 has 4 divisors (see below), whose sum is σ = 124890192. Its totient is φ = 121916452.

The previous prime is 123403297. The next prime is 123403331. The reversal of 123403321 is 123304321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123403321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123403331) 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, 743311 + ... + 743476.

It is an arithmetic number, because the mean of its divisors is an integer number (31222548).

Almost surely, 2^123403321 is an apocalyptic number.

It is an amenable number.

123403321 is a deficient number, since it is larger than the sum of its proper divisors (1486871).

123403321 is an equidigital number, since it uses as much as digits as its factorization.

123403321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486870.

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

The square root of 123403321 is about 11108.7047399776. The cubic root of 123403321 is about 497.8619653132.

Adding to 123403321 its reverse (123304321), we get a palindrome (246707642).

The spelling of 123403321 in words is "one hundred twenty-three million, four hundred three thousand, three hundred twenty-one".