13311005 has 4 divisors (see below), whose sum is σ = 15973212. Its totient is φ = 10648800.

The previous prime is 13310989. The next prime is 13311007. The reversal of 13311005 is 50011331.

13311005 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50011331 = 17 ⋅2941843.

It can be written as a sum of positive squares in 2 ways, for example, as 5262436 + 8048569 = 2294^2 + 2837^2 .

It is not a de Polignac number, because 13311005 - 2⁴ = 13310989 is a prime.

It is a super-2 number, since 2×13311005² = 354365708220050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311007) 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, 1331096 + ... + 1331105.

It is an arithmetic number, because the mean of its divisors is an integer number (3993303).

Almost surely, 2^13311005 is an apocalyptic number.

It is an amenable number.

13311005 is a deficient number, since it is larger than the sum of its proper divisors (2662207).

13311005 is an equidigital number, since it uses as much as digits as its factorization.

13311005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662206.

The product of its (nonzero) digits is 45, while the sum is 14.

The square root of 13311005 is about 3648.4250026553. The cubic root of 13311005 is about 236.9937805106.

Adding to 13311005 its reverse (50011331), we get a palindrome (63322336).

The spelling of 13311005 in words is "thirteen million, three hundred eleven thousand, five".