12322381 has 8 divisors (see below), whose sum is σ = 12656160. Its totient is φ = 11990832.

The previous prime is 12322351. The next prime is 12322391. The reversal of 12322381 is 18322321.

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 12322381 - 2²³ = 3933773 is a prime.

It is a super-2 number, since 2×12322381² = 303682147018322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12322301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21606 + ... + 22168.

It is an arithmetic number, because the mean of its divisors is an integer number (1582020).

Almost surely, 2^12322381 is an apocalyptic number.

It is an amenable number.

12322381 is a deficient number, since it is larger than the sum of its proper divisors (333779).

12322381 is an equidigital number, since it uses as much as digits as its factorization.

12322381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115.

The product of its digits is 576, while the sum is 22.

The square root of 12322381 is about 3510.3249137366. The cubic root of 12322381 is about 230.9749477776.

It can be divided in two parts, 1232 and 2381, that multiplied together give a palindrome (2933392).

The spelling of 12322381 in words is "twelve million, three hundred twenty-two thousand, three hundred eighty-one".