12361361 has 4 divisors (see below), whose sum is σ = 12380724. Its totient is φ = 12342000.

The previous prime is 12361351. The next prime is 12361379. The reversal of 12361361 is 16316321.

It is a happy number.

12361361 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 16316321 = 7 ⋅2330903.

It can be written as a sum of positive squares in 2 ways, for example, as 5909761 + 6451600 = 2431^2 + 2540^2 .

It is a cyclic number.

It is not a de Polignac number, because 12361361 - 2²² = 8167057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12361351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8690 + ... + 10011.

It is an arithmetic number, because the mean of its divisors is an integer number (3095181).

Almost surely, 2^12361361 is an apocalyptic number.

It is an amenable number.

12361361 is a deficient number, since it is larger than the sum of its proper divisors (19363).

12361361 is an equidigital number, since it uses as much as digits as its factorization.

12361361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19362.

The product of its digits is 648, while the sum is 23.

The square root of 12361361 is about 3515.8727223834. The cubic root of 12361361 is about 231.2182429242.

Adding to 12361361 its reverse (16316321), we get a palindrome (28677682).

The spelling of 12361361 in words is "twelve million, three hundred sixty-one thousand, three hundred sixty-one".