12003331311 has 6 divisors (see below), whose sum is σ = 17338145240. Its totient is φ = 8002220868.

The previous prime is 12003331289. The next prime is 12003331331. The reversal of 12003331311 is 11313330021.

It is a happy number.

12003331311 is a `hidden beast` number, since 1 + 20 + 0 + 3 + 331 + 311 = 666.

It is not a de Polignac number, because 12003331311 - 2⁵ = 12003331279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003331331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666851731 + ... + 666851748.

Almost surely, 2^12003331311 is an apocalyptic number.

12003331311 is a deficient number, since it is larger than the sum of its proper divisors (5334813929).

12003331311 is a wasteful number, since it uses less digits than its factorization.

12003331311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333703485 (or 1333703482 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 12003331311 its reverse (11313330021), we get a palindrome (23316661332).

The spelling of 12003331311 in words is "twelve billion, three million, three hundred thirty-one thousand, three hundred eleven".