12304181 has 2 divisors, whose sum is σ = 12304182. Its totient is φ = 12304180.

The previous prime is 12304163. The next prime is 12304217. The reversal of 12304181 is 18140321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8439025 + 3865156 = 2905^2 + 1966^2 .

It is an emirp because it is prime and its reverse (18140321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12304181 is a prime.

It is a super-2 number, since 2×12304181² = 302785740161522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12304111) 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 as a sum of consecutive naturals, namely, 6152090 + 6152091.

It is an arithmetic number, because the mean of its divisors is an integer number (6152091).

Almost surely, 2^12304181 is an apocalyptic number.

It is an amenable number.

12304181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12304181 is an equidigital number, since it uses as much as digits as its factorization.

12304181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 12304181 is about 3507.7316031875. The cubic root of 12304181 is about 230.8611760594.

The spelling of 12304181 in words is "twelve million, three hundred four thousand, one hundred eighty-one".