13363281 has 12 divisors (see below), whose sum is σ = 19377280. Its totient is φ = 8874360.

The previous prime is 13363279. The next prime is 13363283. The reversal of 13363281 is 18236331.

It is a happy number.

13363281 is a `hidden beast` number, since 1 + 336 + 328 + 1 = 666.

13363281 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13363279) and next prime (13363283).

It is not a de Polignac number, because 13363281 - 2¹ = 13363279 is a prime.

It is a super-2 number, since 2×13363281² = 357154558169922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13363283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 301 + ... + 5178.

Almost surely, 2^13363281 is an apocalyptic number.

It is an amenable number.

13363281 is a deficient number, since it is larger than the sum of its proper divisors (6013999).

13363281 is a wasteful number, since it uses less digits than its factorization.

13363281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5756 (or 5753 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 13363281 is about 3655.5821697782. The cubic root of 13363281 is about 237.3036219715.

The spelling of 13363281 in words is "thirteen million, three hundred sixty-three thousand, two hundred eighty-one".