13531089 has 16 divisors (see below), whose sum is σ = 21196224. Its totient is φ = 7569600.

The previous prime is 13531073. The next prime is 13531093. The reversal of 13531089 is 98013531.

It is a happy number.

It is not a de Polignac number, because 13531089 - 2⁴ = 13531073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13531019) 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, 15342 + ... + 16199.

It is an arithmetic number, because the mean of its divisors is an integer number (1324764).

Almost surely, 2^13531089 is an apocalyptic number.

It is an amenable number.

13531089 is a deficient number, since it is larger than the sum of its proper divisors (7665135).

13531089 is a wasteful number, since it uses less digits than its factorization.

13531089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31568.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 13531089 is about 3678.4628583146. The cubic root of 13531089 is about 238.2927980790.

It can be divided in two parts, 1353 and 1089, that added together give a palindrome (2442).

The spelling of 13531089 in words is "thirteen million, five hundred thirty-one thousand, eighty-nine".