831601 has 4 divisors (see below), whose sum is σ = 833652. Its totient is φ = 829552.

The previous prime is 831599. The next prime is 831617. The reversal of 831601 is 106138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106138 = 2 ⋅53069.

It can be written as a sum of positive squares in 2 ways, for example, as 389376 + 442225 = 624^2 + 665^2 .

It is a cyclic number.

It is not a de Polignac number, because 831601 - 2¹ = 831599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (831631) 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, 190 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (208413).

2⁸³¹⁶⁰¹ is an apocalyptic number.

It is an amenable number.

831601 is a deficient number, since it is larger than the sum of its proper divisors (2051).

831601 is a wasteful number, since it uses less digits than its factorization.

831601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 831601 is about 911.9215975072. The cubic root of 831601 is about 94.0383501282.

Adding to 831601 its reverse (106138), we get a palindrome (937739).

The spelling of 831601 in words is "eight hundred thirty-one thousand, six hundred one".