13581383 has 4 divisors (see below), whose sum is σ = 13625088. Its totient is φ = 13537680.

The previous prime is 13581361. The next prime is 13581389. The reversal of 13581383 is 38318531.

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

It is a cyclic number.

It is not a de Polignac number, because 13581383 - 2⁶ = 13581319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13581389) 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, 21383 + ... + 22008.

It is an arithmetic number, because the mean of its divisors is an integer number (3406272).

Almost surely, 2^13581383 is an apocalyptic number.

13581383 is a deficient number, since it is larger than the sum of its proper divisors (43705).

13581383 is an equidigital number, since it uses as much as digits as its factorization.

13581383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43704.

The product of its digits is 8640, while the sum is 32.

The square root of 13581383 is about 3685.2927970515. The cubic root of 13581383 is about 238.5876716068.

It can be divided in two parts, 135 and 81383, that added together give a palindrome (81518).

The spelling of 13581383 in words is "thirteen million, five hundred eighty-one thousand, three hundred eighty-three".