13440343241 has 4 divisors (see below), whose sum is σ = 14474215812. Its totient is φ = 12406470672.

The previous prime is 13440343223. The next prime is 13440343247. The reversal of 13440343241 is 14234304431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14234304431 = 71 ⋅200483161.

It can be written as a sum of positive squares in 2 ways, for example, as 600054016 + 12840289225 = 24496^2 + 113315^2 .

It is a cyclic number.

It is not a de Polignac number, because 13440343241 - 2³⁰ = 12366601417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13440343247) 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, 516936266 + ... + 516936291.

It is an arithmetic number, because the mean of its divisors is an integer number (3618553953).

Almost surely, 2^13440343241 is an apocalyptic number.

It is an amenable number.

13440343241 is a deficient number, since it is larger than the sum of its proper divisors (1033872571).

13440343241 is a wasteful number, since it uses less digits than its factorization.

13440343241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033872570.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 13440343241 its reverse (14234304431), we get a palindrome (27674647672).

The spelling of 13440343241 in words is "thirteen billion, four hundred forty million, three hundred forty-three thousand, two hundred forty-one".