11013 has 4 divisors (see below), whose sum is σ = 14688. Its totient is φ = 7340.

The previous prime is 11003. The next prime is 11027. The reversal of 11013 is 31011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31011 = 3 ⋅10337.

It is a cyclic number.

It is not a de Polignac number, because 11013 - 2⁶ = 10949 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10992 and 11010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003) 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, 1833 + ... + 1838.

It is an arithmetic number, because the mean of its divisors is an integer number (3672).

It is an amenable number.

11013 is a deficient number, since it is larger than the sum of its proper divisors (3675).

11013 is an equidigital number, since it uses as much as digits as its factorization.

11013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674.

The product of its (nonzero) digits is 3, while the sum is 6.

The square root of 11013 is about 104.9428415853. The cubic root of 11013 is about 22.2485585903.

Adding to 11013 its reverse (31011), we get a palindrome (42024).

The spelling of 11013 in words is "eleven thousand, thirteen".