13601281 has 8 divisors (see below), whose sum is σ = 14083328. Its totient is φ = 13122000.

The previous prime is 13601279. The next prime is 13601297. The reversal of 13601281 is 18210631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 8-Lehmer number, since φ(13601281) divides (13601281-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 13601281 - 2¹ = 13601279 is a prime.

It is a super-2 number, since 2×13601281² = 369989689681922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13601221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16366 + ... + 17176.

It is an arithmetic number, because the mean of its divisors is an integer number (1760416).

Almost surely, 2^13601281 is an apocalyptic number.

It is an amenable number.

13601281 is a deficient number, since it is larger than the sum of its proper divisors (482047).

13601281 is an equidigital number, since it uses as much as digits as its factorization.

13601281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 13601281 is about 3687.9914587754. The cubic root of 13601281 is about 238.7041325226.

The spelling of 13601281 in words is "thirteen million, six hundred one thousand, two hundred eighty-one".