1331223 has 16 divisors (see below), whose sum is σ = 1860480. Its totient is φ = 845856.

The previous prime is 1331207. The next prime is 1331227. The reversal of 1331223 is 3221331.

It is not a de Polignac number, because 1331223 - 2⁴ = 1331207 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7348 + ... + 7526.

It is an arithmetic number, because the mean of its divisors is an integer number (116280).

2^1331223 is an apocalyptic number.

1331223 is a deficient number, since it is larger than the sum of its proper divisors (529257).

1331223 is a wasteful number, since it uses less digits than its factorization.

1331223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286.

The product of its digits is 108, while the sum is 15.

The square root of 1331223 is about 1153.7863753746. The cubic root of 1331223 is about 110.0061429076.

Adding to 1331223 its product of digits (108), we get a palindrome (1331331).

Adding to 1331223 its reverse (3221331), we get a palindrome (4552554).

The spelling of 1331223 in words is "one million, three hundred thirty-one thousand, two hundred twenty-three".