831223 has 4 divisors (see below), whose sum is σ = 835600. Its totient is φ = 826848.

The previous prime is 831221. The next prime is 831239. The reversal of 831223 is 322138.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 831223 - 2¹ = 831221 is a prime.

It is a Duffinian number.

831223 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 831223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1890 + ... + 2287.

It is an arithmetic number, because the mean of its divisors is an integer number (208900).

2⁸³¹²²³ is an apocalyptic number.

831223 is a deficient number, since it is larger than the sum of its proper divisors (4377).

831223 is a wasteful number, since it uses less digits than its factorization.

831223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376.

The product of its digits is 288, while the sum is 19.

The square root of 831223 is about 911.7143192909. The cubic root of 831223 is about 94.0240997511.

The spelling of 831223 in words is "eight hundred thirty-one thousand, two hundred twenty-three".