12320003 has 4 divisors (see below), whose sum is σ = 12458520. Its totient is φ = 12181488.

The previous prime is 12319997. The next prime is 12320017. The reversal of 12320003 is 30002321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30002321 = 293 ⋅102397.

It is a cyclic number.

It is not a de Polignac number, because 12320003 - 2¹⁰ = 12318979 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12320023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69125 + ... + 69302.

It is an arithmetic number, because the mean of its divisors is an integer number (3114630).

Almost surely, 2^12320003 is an apocalyptic number.

12320003 is a deficient number, since it is larger than the sum of its proper divisors (138517).

12320003 is an equidigital number, since it uses as much as digits as its factorization.

12320003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138516.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 12320003 is about 3509.9861823090. The cubic root of 12320003 is about 230.9600888051.

Adding to 12320003 its reverse (30002321), we get a palindrome (42322324).

The spelling of 12320003 in words is "twelve million, three hundred twenty thousand, three".