13240161 has 24 divisors (see below), whose sum is σ = 22093344. Its totient is φ = 7551360.

The previous prime is 13240159. The next prime is 13240181. The reversal of 13240161 is 16104231.

It is a happy number.

It is not a de Polignac number, because 13240161 - 2¹ = 13240159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13240141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2251 + ... + 5616.

It is an arithmetic number, because the mean of its divisors is an integer number (920556).

Almost surely, 2^13240161 is an apocalyptic number.

13240161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13240161 is a deficient number, since it is larger than the sum of its proper divisors (8853183).

13240161 is a wasteful number, since it uses less digits than its factorization.

13240161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7901 (or 7898 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 13240161 is about 3638.7032030656. The cubic root of 13240161 is about 236.5725886299.

Adding to 13240161 its reverse (16104231), we get a palindrome (29344392).

The spelling of 13240161 in words is "thirteen million, two hundred forty thousand, one hundred sixty-one".