12281327 has 4 divisors (see below), whose sum is σ = 13003776. Its totient is φ = 11558880.

The previous prime is 12281323. The next prime is 12281329. The reversal of 12281327 is 72318221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72318221 = 17 ⋅4254013.

It is a cyclic number.

It is not a de Polignac number, because 12281327 - 2² = 12281323 is a prime.

It is a super-3 number, since 3×12281327³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12281296 and 12281305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12281323) 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, 361199 + ... + 361232.

It is an arithmetic number, because the mean of its divisors is an integer number (3250944).

Almost surely, 2^12281327 is an apocalyptic number.

12281327 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12281327 is a deficient number, since it is larger than the sum of its proper divisors (722449).

12281327 is an equidigital number, since it uses as much as digits as its factorization.

12281327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722448.

The product of its digits is 1344, while the sum is 26.

The square root of 12281327 is about 3504.4724281980. The cubic root of 12281327 is about 230.7181522820.

Adding to 12281327 its reverse (72318221), we get a palindrome (84599548).

The spelling of 12281327 in words is "twelve million, two hundred eighty-one thousand, three hundred twenty-seven".