13281339 has 4 divisors (see below), whose sum is σ = 17708456. Its totient is φ = 8854224.

The previous prime is 13281329. The next prime is 13281371. The reversal of 13281339 is 93318231.

13281339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13281339 - 2¹³ = 13273147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13281329) 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, 2213554 + ... + 2213559.

It is an arithmetic number, because the mean of its divisors is an integer number (4427114).

Almost surely, 2^13281339 is an apocalyptic number.

13281339 is a deficient number, since it is larger than the sum of its proper divisors (4427117).

13281339 is an equidigital number, since it uses as much as digits as its factorization.

13281339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4427116.

The product of its digits is 3888, while the sum is 30.

The square root of 13281339 is about 3644.3571449571. The cubic root of 13281339 is about 236.8175882796.

The spelling of 13281339 in words is "thirteen million, two hundred eighty-one thousand, three hundred thirty-nine".