11211311 has 8 divisors (see below), whose sum is σ = 11978880. Its totient is φ = 10461528.

The previous prime is 11211293. The next prime is 11211331. The reversal of 11211311 is 11311211.

It is a happy number.

11211311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11211311 - 2⁶ = 11211247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211292 and 11211301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3131 + ... + 5676.

It is an arithmetic number, because the mean of its divisors is an integer number (1497360).

Almost surely, 2^11211311 is an apocalyptic number.

11211311 is a deficient number, since it is larger than the sum of its proper divisors (767569).

11211311 is an equidigital number, since it uses as much as digits as its factorization.

11211311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8893.

The product of its digits is 6, while the sum is 11.

The square root of 11211311 is about 3348.3295835386. The cubic root of 11211311 is about 223.8130814721.

Adding to 11211311 its reverse (11311211), we get a palindrome (22522522).

The spelling of 11211311 in words is "eleven million, two hundred eleven thousand, three hundred eleven".