13311211 has 4 divisors (see below), whose sum is σ = 13343400. Its totient is φ = 13279024.

The previous prime is 13311169. The next prime is 13311217. The reversal of 13311211 is 11211331.

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

It is a 4-Lehmer number, since φ(13311211) divides (13311211-1)⁴.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13311211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13311191 and 13311200.

It is not an unprimeable number, because it can be changed into a prime (13311217) 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, 15466 + ... + 16303.

It is an arithmetic number, because the mean of its divisors is an integer number (3335850).

Almost surely, 2^13311211 is an apocalyptic number.

13311211 is a deficient number, since it is larger than the sum of its proper divisors (32189).

13311211 is an equidigital number, since it uses as much as digits as its factorization.

13311211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32188.

The product of its digits is 18, while the sum is 13.

The square root of 13311211 is about 3648.4532339061. The cubic root of 13311211 is about 236.9950030696.

Adding to 13311211 its reverse (11211331), we get a palindrome (24522542).

The spelling of 13311211 in words is "thirteen million, three hundred eleven thousand, two hundred eleven".