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: 7963211 = 1361 ⋅5851.
It is a cyclic number.
It is a Duffinian number.
21123697 is an apocalyptic number.
It is an amenable number.
1123697 is an equidigital number, since it uses as much as digits as its factorization.
1123697 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5262.
The square root of 1123697 is about 1060.0457537295. The cubic root of 1123697 is about 103.9640223187.
The spelling of 1123697 in words is "one million, one hundred twenty-three thousand, six hundred ninety-seven".