1133 has 4 divisors (see below), whose sum is σ = 1248.
Its totient is φ = 1020.
The previous prime is 1129. The next prime is 1151. The reversal of 1133 is 3311.
Adding to 1133 its reverse (3311), we get a palindrome (4444).
It can be divided in two parts, 11 and 33, that multiplied together give a palindrome (363).
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.
It is a cyclic number.
It is not a de Polignac number, because 1133 - 22 = 1129 is a prime.
It is a Duffinian number.
1133 is a modest number, since divided by 33 gives 11 as remainder.
It is a Curzon number.
It is a plaindrome in base 3, base 9, base 10, base 14 and base 16.
It is a nialpdrome in base 11.
It is a zygodrome in base 3 and base 10.
It is a self number, because there is not a number n which added to its sum of digits gives 1133.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1103) 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, 41 + ... + 62.
It is an arithmetic number, because the mean of its divisors is an integer number (312).
21133 is an apocalyptic number.
It is an amenable number.
1133 is a deficient number, since it is larger than the sum of its proper divisors (115).
1133 is a wasteful number, since it uses less digits than its factorization.
1133 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 114.
The product of its digits is 9, while the sum is 8.
The square root of 1133 is about 33.6600653594.
The cubic root of 1133 is about 10.4250137540.
The spelling of 1133 in words is "one thousand, one hundred thirty-three".