12321313331 has 4 divisors (see below), whose sum is σ = 12321792600. Its totient is φ = 12320834064.

The previous prime is 12321313307. The next prime is 12321313357. The reversal of 12321313331 is 13331312321.

12321313331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12321313331 - 2¹⁸ = 12321051187 is a prime.

It is a super-2 number, since 2×12321313331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12321313297 and 12321313306.

It is not an unprimeable number, because it can be changed into a prime (12321313531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198746 + ... + 253263.

It is an arithmetic number, because the mean of its divisors is an integer number (3080448150).

Almost surely, 2^12321313331 is an apocalyptic number.

12321313331 is a deficient number, since it is larger than the sum of its proper divisors (479269).

12321313331 is an equidigital number, since it uses as much as digits as its factorization.

12321313331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479268.

The product of its digits is 972, while the sum is 23.

Adding to 12321313331 its reverse (13331312321), we get a palindrome (25652625652).

The spelling of 12321313331 in words is "twelve billion, three hundred twenty-one million, three hundred thirteen thousand, three hundred thirty-one".