11311211 has 4 divisors (see below), whose sum is σ = 11370624. Its totient is φ = 11251800.

The previous prime is 11311177. The next prime is 11311217. The reversal of 11311211 is 11211311.

It is a happy number.

11311211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11311211 - 2¹⁴ = 11294827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11311192 and 11311201.

It is not an unprimeable number, because it can be changed into a prime (11311217) 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, 29420 + ... + 29801.

It is an arithmetic number, because the mean of its divisors is an integer number (2842656).

Almost surely, 2^11311211 is an apocalyptic number.

11311211 is a deficient number, since it is larger than the sum of its proper divisors (59413).

11311211 is an equidigital number, since it uses as much as digits as its factorization.

11311211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59412.

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

The square root of 11311211 is about 3363.2143850787. The cubic root of 11311211 is about 224.4758895607.

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

The spelling of 11311211 in words is "eleven million, three hundred eleven thousand, two hundred eleven".