804331 has 4 divisors (see below), whose sum is σ = 877464. Its totient is φ = 731200.

The previous prime is 804329. The next prime is 804337. The reversal of 804331 is 133408.

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 804331 - 2¹ = 804329 is a prime.

It is a super-2 number, since 2×804331² = 1293896715122, which contains 22 as substring.

It is a Duffinian number.

804331 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 804299 and 804308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804337) 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 3 ways as a sum of consecutive naturals, for example, 36550 + ... + 36571.

It is an arithmetic number, because the mean of its divisors is an integer number (219366).

2⁸⁰⁴³³¹ is an apocalyptic number.

804331 is a deficient number, since it is larger than the sum of its proper divisors (73133).

804331 is a wasteful number, since it uses less digits than its factorization.

804331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73132.

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

The square root of 804331 is about 896.8450256315. The cubic root of 804331 is about 92.9989979466.

Adding to 804331 its reverse (133408), we get a palindrome (937739).

The spelling of 804331 in words is "eight hundred four thousand, three hundred thirty-one".