13017281 has 4 divisors (see below), whose sum is σ = 13025364. Its totient is φ = 13009200.

The previous prime is 13017269. The next prime is 13017283. The reversal of 13017281 is 18271031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7376656 + 5640625 = 2716^2 + 2375^2 .

It is a cyclic number.

It is not a de Polignac number, because 13017281 - 2¹⁰ = 13016257 is a prime.

It is a super-2 number, since 2×13017281² = 338899209265922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13017283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 710 + ... + 5151.

It is an arithmetic number, because the mean of its divisors is an integer number (3256341).

Almost surely, 2^13017281 is an apocalyptic number.

It is an amenable number.

13017281 is a deficient number, since it is larger than the sum of its proper divisors (8083).

13017281 is an equidigital number, since it uses as much as digits as its factorization.

13017281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8082.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 13017281 is about 3607.9469231129. The cubic root of 13017281 is about 235.2376108830.

The spelling of 13017281 in words is "thirteen million, seventeen thousand, two hundred eighty-one".