13281261 has 16 divisors (see below), whose sum is σ = 20786304. Its totient is φ = 7383744.

The previous prime is 13281251. The next prime is 13281271. The reversal of 13281261 is 16218231.

It is an interprime number because it is at equal distance from previous prime (13281251) and next prime (13281271).

It is not a de Polignac number, because 13281261 - 2⁹ = 13280749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13281221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7770 + ... + 9323.

It is an arithmetic number, because the mean of its divisors is an integer number (1299144).

Almost surely, 2^13281261 is an apocalyptic number.

It is an amenable number.

13281261 is a deficient number, since it is larger than the sum of its proper divisors (7505043).

13281261 is a wasteful number, since it uses less digits than its factorization.

13281261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17140.

The product of its digits is 576, while the sum is 24.

The square root of 13281261 is about 3644.3464434655. The cubic root of 13281261 is about 236.8171246765.

Adding to 13281261 its reverse (16218231), we get a palindrome (29499492).

The spelling of 13281261 in words is "thirteen million, two hundred eighty-one thousand, two hundred sixty-one".