12368281 has 2 divisors, whose sum is σ = 12368282. Its totient is φ = 12368280.

The previous prime is 12368269. The next prime is 12368309. The reversal of 12368281 is 18286321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10830681 + 1537600 = 3291^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 12368281 - 2⁹ = 12367769 is a prime.

It is a super-2 number, since 2×12368281² = 305948749789922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12368381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6184140 + 6184141.

It is an arithmetic number, because the mean of its divisors is an integer number (6184141).

Almost surely, 2^12368281 is an apocalyptic number.

It is an amenable number.

12368281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12368281 is an equidigital number, since it uses as much as digits as its factorization.

12368281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 31.

The square root of 12368281 is about 3516.8566931281. The cubic root of 12368281 is about 231.2613808862.

The spelling of 12368281 in words is "twelve million, three hundred sixty-eight thousand, two hundred eighty-one".