11213311 has 4 divisors (see below), whose sum is σ = 11366992. Its totient is φ = 11059632.

The previous prime is 11213303. The next prime is 11213347. The reversal of 11213311 is 11331211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11331211 = 41 ⋅276371.

It is a cyclic number.

It is not a de Polignac number, because 11213311 - 2³ = 11213303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11213291 and 11213300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213381) 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, 76731 + ... + 76876.

It is an arithmetic number, because the mean of its divisors is an integer number (2841748).

Almost surely, 2^11213311 is an apocalyptic number.

11213311 is a deficient number, since it is larger than the sum of its proper divisors (153681).

11213311 is an equidigital number, since it uses as much as digits as its factorization.

11213311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153680.

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

The square root of 11213311 is about 3348.6282266026. The cubic root of 11213311 is about 223.8263894474.

Adding to 11213311 its reverse (11331211), we get a palindrome (22544522).

The spelling of 11213311 in words is "eleven million, two hundred thirteen thousand, three hundred eleven".