805231 has 8 divisors (see below), whose sum is σ = 945440. Its totient is φ = 671328.

The previous prime is 805223. The next prime is 805241. The reversal of 805231 is 132508.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 805231 - 2³ = 805223 is a prime.

It is a super-2 number, since 2×805231² = 1296793926722, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 805199 and 805208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805241) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1296 + ... + 1813.

It is an arithmetic number, because the mean of its divisors is an integer number (118180).

2⁸⁰⁵²³¹ is an apocalyptic number.

805231 is a deficient number, since it is larger than the sum of its proper divisors (140209).

805231 is a wasteful number, since it uses less digits than its factorization.

805231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 805231 is about 897.3466442797. The cubic root of 805231 is about 93.0336718554.

Adding to 805231 its reverse (132508), we get a palindrome (937739).

The spelling of 805231 in words is "eight hundred five thousand, two hundred thirty-one".