13331365 has 4 divisors (see below), whose sum is σ = 15997644. Its totient is φ = 10665088.

The previous prime is 13331309. The next prime is 13331411. The reversal of 13331365 is 56313331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56313331 = 29 ⋅1941839.

It can be written as a sum of positive squares in 2 ways, for example, as 2566404 + 10764961 = 1602^2 + 3281^2 .

It is a cyclic number.

It is not a de Polignac number, because 13331365 - 2⁹ = 13330853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1333132 + ... + 1333141.

It is an arithmetic number, because the mean of its divisors is an integer number (3999411).

Almost surely, 2^13331365 is an apocalyptic number.

It is an amenable number.

13331365 is a deficient number, since it is larger than the sum of its proper divisors (2666279).

13331365 is an equidigital number, since it uses as much as digits as its factorization.

13331365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666278.

The product of its digits is 2430, while the sum is 25.

The square root of 13331365 is about 3651.2141816114. The cubic root of 13331365 is about 237.1145511390.

Adding to 13331365 its reverse (56313331), we get a palindrome (69644696).

The spelling of 13331365 in words is "thirteen million, three hundred thirty-one thousand, three hundred sixty-five".