12311022003 has 36 divisors (see below), whose sum is σ = 19184242392. Its totient is φ = 7001971200.

The previous prime is 12311021981. The next prime is 12311022011. The reversal of 12311022003 is 30022011321.

It is a de Polignac number, because none of the positive numbers 2^k-12311022003 is a prime.

It is a super-2 number, since 2×12311022003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12311022023) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26938551 + ... + 26939007.

It is an arithmetic number, because the mean of its divisors is an integer number (532895622).

Almost surely, 2^12311022003 is an apocalyptic number.

12311022003 is a deficient number, since it is larger than the sum of its proper divisors (6873220389).

12311022003 is an frugal number, since it uses more digits than its factorization.

12311022003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12311022003 its reverse (30022011321), we get a palindrome (42333033324).

The spelling of 12311022003 in words is "twelve billion, three hundred eleven million, twenty-two thousand, three".