13240165 has 4 divisors (see below), whose sum is σ = 15888204. Its totient is φ = 10592128.

The previous prime is 13240159. The next prime is 13240181. The reversal of 13240165 is 56104231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8105409 + 5134756 = 2847^2 + 2266^2 .

It is a cyclic number.

It is not a de Polignac number, because 13240165 - 2¹³ = 13231973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1324012 + ... + 1324021.

It is an arithmetic number, because the mean of its divisors is an integer number (3972051).

Almost surely, 2^13240165 is an apocalyptic number.

It is an amenable number.

13240165 is a deficient number, since it is larger than the sum of its proper divisors (2648039).

13240165 is an equidigital number, since it uses as much as digits as its factorization.

13240165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648038.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 13240165 is about 3638.7037527119. The cubic root of 13240165 is about 236.5726124536.

Adding to 13240165 its reverse (56104231), we get a palindrome (69344396).

The spelling of 13240165 in words is "thirteen million, two hundred forty thousand, one hundred sixty-five".