12311321 has 8 divisors (see below), whose sum is σ = 13716864. Its totient is φ = 10953520.

The previous prime is 12311311. The next prime is 12311333.

12311321 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12311321 - 2²² = 8117017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12311296 and 12311305.

It is not an unprimeable number, because it can be changed into a prime (12311311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11390 + ... + 12423.

It is an arithmetic number, because the mean of its divisors is an integer number (1714608).

Almost surely, 2^12311321 is an apocalyptic number.

12311321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12311321 is a deficient number, since it is larger than the sum of its proper divisors (1405543).

12311321 is a wasteful number, since it uses less digits than its factorization.

12311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23871.

The product of its digits is 36, while the sum is 14.

The square root of 12311321 is about 3508.7492073387. The cubic root of 12311321 is about 230.9058229443.

It can be divided in two parts, 1231 and 1321, that added together give a palindrome (2552).

The spelling of 12311321 in words is "twelve million, three hundred eleven thousand, three hundred twenty-one".