12311312003 has 4 divisors (see below), whose sum is σ = 12430839408. Its totient is φ = 12191784600.

The previous prime is 12311311997. The next prime is 12311312033. The reversal of 12311312003 is 30021311321.

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

It is a cyclic number.

It is not a de Polignac number, because 12311312003 - 2⁶ = 12311311939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12311312033) 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, 59763548 + ... + 59763753.

It is an arithmetic number, because the mean of its divisors is an integer number (3107709852).

Almost surely, 2^12311312003 is an apocalyptic number.

12311312003 is a deficient number, since it is larger than the sum of its proper divisors (119527405).

12311312003 is a wasteful number, since it uses less digits than its factorization.

12311312003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119527404.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12311312003 its reverse (30021311321), we get a palindrome (42332623324).

The spelling of 12311312003 in words is "twelve billion, three hundred eleven million, three hundred twelve thousand, three".