1231223 has 6 divisors (see below), whose sum is σ = 1432296. Its totient is φ = 1055292.

The previous prime is 1231207. The next prime is 1231229. The reversal of 1231223 is 3221321.

It is a happy number.

It is not a de Polignac number, because 1231223 - 2⁴ = 1231207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231198 and 1231207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12515 + ... + 12612.

It is an arithmetic number, because the mean of its divisors is an integer number (238716).

2^1231223 is an apocalyptic number.

1231223 is a deficient number, since it is larger than the sum of its proper divisors (201073).

1231223 is an equidigital number, since it uses as much as digits as its factorization.

1231223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25141 (or 25134 counting only the distinct ones).

The product of its digits is 72, while the sum is 14.

The square root of 1231223 is about 1109.6048846324. The cubic root of 1231223 is about 107.1796266603.

Adding to 1231223 its reverse (3221321), we get a palindrome (4452544).

The spelling of 1231223 in words is "one million, two hundred thirty-one thousand, two hundred twenty-three".