12281361 has 8 divisors (see below), whose sum is σ = 17338464. Its totient is φ = 7705920.

The previous prime is 12281341. The next prime is 12281389. The reversal of 12281361 is 16318221.

12281361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12281361 - 2⁵ = 12281329 is a prime.

It is a nialpdrome in base 16.

It is a zygodrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12281341) 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, 120355 + ... + 120456.

It is an arithmetic number, because the mean of its divisors is an integer number (2167308).

Almost surely, 2^12281361 is an apocalyptic number.

It is an amenable number.

12281361 is a deficient number, since it is larger than the sum of its proper divisors (5057103).

12281361 is a wasteful number, since it uses less digits than its factorization.

12281361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240831.

The product of its digits is 576, while the sum is 24.

The square root of 12281361 is about 3504.4772791388. The cubic root of 12281361 is about 230.7183651909.

Adding to 12281361 its reverse (16318221), we get a palindrome (28599582).

The spelling of 12281361 in words is "twelve million, two hundred eighty-one thousand, three hundred sixty-one".