Adding to 1133213 its reverse (3123311), we get a palindrome (4256524).
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: 3123311 = 127 ⋅24593.
It is a cyclic number.
It is a Duffinian number.
It is a Curzon number.
It is a congruent number.
21133213 is an apocalyptic number.
It is an amenable number.
1133213 is an equidigital number, since it uses as much as digits as its factorization.
1133213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19266.
The square root of 1133213 is about 1064.5247766022. The cubic root of 1133213 is about 104.2566700163.
The spelling of 1133213 in words is "one million, one hundred thirty-three thousand, two hundred thirteen".