11201311 has 4 divisors (see below), whose sum is σ = 12219624. Its totient is φ = 10183000.

The previous prime is 11201303. The next prime is 11201321. The reversal of 11201311 is 11310211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11310211 = 11 ⋅1028201.

It is a cyclic number.

It is not a de Polignac number, because 11201311 - 2³ = 11201303 is a prime.

It is a super-4 number, since 4×11201311⁴ (a number of 29 digits) contains 4444 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 (11201321) 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, 509140 + ... + 509161.

It is an arithmetic number, because the mean of its divisors is an integer number (3054906).

Almost surely, 2^11201311 is an apocalyptic number.

11201311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11201311 is a deficient number, since it is larger than the sum of its proper divisors (1018313).

11201311 is a wasteful number, since it uses less digits than its factorization.

11201311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018312.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 11201311 is about 3346.8359684932. The cubic root of 11201311 is about 223.7465178448.

Adding to 11201311 its reverse (11310211), we get a palindrome (22511522).

Subtracting 11201311 from its reverse (11310211), we obtain a square (108900 = 330²).

The spelling of 11201311 in words is "eleven million, two hundred one thousand, three hundred eleven".