13281081 has 12 divisors (see below), whose sum is σ = 19464816. Its totient is φ = 8048920.

The previous prime is 13281071. The next prime is 13281091. The reversal of 13281081 is 18018231.

It is an interprime number because it is at equal distance from previous prime (13281071) and next prime (13281091).

It is not a de Polignac number, because 13281081 - 2⁵ = 13281049 is a prime.

It is a super-2 number, since 2×13281081² = 352774225057122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13281001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17931 + ... + 18656.

It is an arithmetic number, because the mean of its divisors is an integer number (1622068).

Almost surely, 2^13281081 is an apocalyptic number.

13281081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13281081 is a deficient number, since it is larger than the sum of its proper divisors (6183735).

13281081 is a wasteful number, since it uses less digits than its factorization.

13281081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36612 (or 36601 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 13281081 is about 3644.3217475958. The cubic root of 13281081 is about 236.8160548164.

The spelling of 13281081 in words is "thirteen million, two hundred eighty-one thousand, eighty-one".