1231322 has 4 divisors (see below), whose sum is σ = 1846986.
Its totient is φ = 615660.
The previous prime is 1231319. The next prime is 1231337. The reversal of 1231322 is 2231321.
Adding to 1231322 its reverse (2231321), we get a palindrome (3462643).
Subtracting 1231322 from its reverse (2231321), we obtain a palindrome (999999).
It is a happy number.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 1164241 + 67081 = 1079^2 + 259^2
It is a junction number, because it is equal to n+sod(n) for n = 1231297 and 1231306.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307829 + ... + 307832.
21231322 is an apocalyptic number.
1231322 is a deficient number, since it is larger than the sum of its proper divisors (615664).
1231322 is an equidigital number, since it uses as much as digits as its factorization.
1231322 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 615663.
The product of its digits is 72, while the sum is 14.
The square root of 1231322 is about 1109.6494942098.
The cubic root of 1231322 is about 107.1824992780.
The spelling of 1231322 in words is "one million, two hundred thirty-one thousand, three hundred twenty-two".