12311203321 has 4 divisors (see below), whose sum is σ = 12708338944. Its totient is φ = 11914067700.

The previous prime is 12311203309. The next prime is 12311203357. The reversal of 12311203321 is 12330211321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12311203321 - 2²⁷ = 12176985593 is a prime.

It is a super-2 number, since 2×12311203321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12311203381) 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, 198567765 + ... + 198567826.

It is an arithmetic number, because the mean of its divisors is an integer number (3177084736).

Almost surely, 2^12311203321 is an apocalyptic number.

It is an amenable number.

12311203321 is a deficient number, since it is larger than the sum of its proper divisors (397135623).

12311203321 is an equidigital number, since it uses as much as digits as its factorization.

12311203321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397135622.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12311203321 its reverse (12330211321), we get a palindrome (24641414642).

The spelling of 12311203321 in words is "twelve billion, three hundred eleven million, two hundred three thousand, three hundred twenty-one".