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: 7921321 = 29 ⋅273149.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1231297 is a prime.
It is a Duffinian number.
21231297 is an apocalyptic number.
It is an amenable number.
1231297 is an equidigital number, since it uses as much as digits as its factorization.
1231297 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2798.
The square root of 1231297 is about 1109.6382293342. The cubic root of 1231297 is about 107.1817738840.
The spelling of 1231297 in words is "one million, two hundred thirty-one thousand, two hundred ninety-seven".