Adding to 1231104 its reverse (4011321), we get a palindrome (5242425).
It is a happy number.
It is a self number, because there is not a number n which added to its sum of digits gives 1231104.
It is an unprimeable number.
21231104 is an apocalyptic number.
1231104 is a gapful number since it is divisible by the number (14) 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 1231104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1880480).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1231104 is an equidigital number, since it uses as much as digits as its factorization.
1231104 is an evil number, because the sum of its binary digits is even.
The square root of 1231104 is about 1109.5512606455. The cubic root of 1231104 is about 107.1761735121.
The spelling of 1231104 in words is "one million, two hundred thirty-one thousand, one hundred four".