831125 has 16 divisors (see below), whose sum is σ = 1063920. Its totient is φ = 648000.

The previous prime is 831109. The next prime is 831139. The reversal of 831125 is 521138.

It can be written as a sum of positive squares in 8 ways, for example, as 432964 + 398161 = 658^2 + 631^2 .

It is not a de Polignac number, because 831125 - 2⁴ = 831109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 831097 and 831106.

It is a congruent number.

It is an unprimeable 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 15 ways as a sum of consecutive naturals, for example, 7571 + ... + 7679.

It is an arithmetic number, because the mean of its divisors is an integer number (66495).

2⁸³¹¹²⁵ is an apocalyptic number.

It is an amenable number.

831125 is a deficient number, since it is larger than the sum of its proper divisors (232795).

831125 is a wasteful number, since it uses less digits than its factorization.

831125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 175 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 831125 is about 911.6605728011. The cubic root of 831125 is about 94.0204045036.

The spelling of 831125 in words is "eight hundred thirty-one thousand, one hundred twenty-five".