831204 has 36 divisors (see below), whose sum is σ = 2293200. Its totient is φ = 251760.

The previous prime is 831191. The next prime is 831217. The reversal of 831204 is 402138.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (831191) and next prime (831217).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is an unprimeable number.

831204 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 11 ways as a sum of consecutive naturals, for example, 654 + ... + 1445.

It is an arithmetic number, because the mean of its divisors is an integer number (63700).

2⁸³¹²⁰⁴ is an apocalyptic number.

It is an amenable number.

831204 is an abundant number, since it is smaller than the sum of its proper divisors (1461996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

831204 is a wasteful number, since it uses less digits than its factorization.

831204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120 (or 2115 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 831204 is about 911.7038993006. The cubic root of 831204 is about 94.0233833482.

It can be divided in two parts, 831 and 204, that added together give a triangular number (1035 = T₄₅).

The spelling of 831204 in words is "eight hundred thirty-one thousand, two hundred four".