Adding to 11031020 its reverse (2013011), we get a palindrome (13044031).
Subtracting from 11031020 its reverse (2013011), we obtain a square (9018009 = 30032).
Almost surely, 211031020 is an apocalyptic number.
11031020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 11031020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16934400).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11031020 is a wasteful number, since it uses less digits than its factorization.
11031020 is an odious number, because the sum of its binary digits is odd.
The square root of 11031020 is about 3321.2979390594. The cubic root of 11031020 is about 222.6068669819.
The spelling of 11031020 in words is "eleven million, thirty-one thousand, twenty".