12312003 has 8 divisors (see below), whose sum is σ = 17908416. Its totient is φ = 7461800.

The previous prime is 12311989. The next prime is 12312011. The reversal of 12312003 is 30021321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12312003 - 2⁶ = 12311939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12312003.

It is not an unprimeable number, because it can be changed into a prime (12312023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186513 + ... + 186578.

It is an arithmetic number, because the mean of its divisors is an integer number (2238552).

Almost surely, 2^12312003 is an apocalyptic number.

12312003 is a deficient number, since it is larger than the sum of its proper divisors (5596413).

12312003 is a wasteful number, since it uses less digits than its factorization.

12312003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373105.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 12312003 is about 3508.8463916222. The cubic root of 12312003 is about 230.9100866315.

Adding to 12312003 its reverse (30021321), we get a palindrome (42333324).

The spelling of 12312003 in words is "twelve million, three hundred twelve thousand, three".