831397 has 8 divisors (see below), whose sum is σ = 963776. Its totient is φ = 702432.

The previous prime is 831373. The next prime is 831407. The reversal of 831397 is 793138.

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

It is a cyclic number.

It is not a de Polignac number, because 831397 - 2¹¹ = 829349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303 + ... + 1324.

It is an arithmetic number, because the mean of its divisors is an integer number (120472).

2⁸³¹³⁹⁷ is an apocalyptic number.

It is an amenable number.

831397 is a deficient number, since it is larger than the sum of its proper divisors (132379).

831397 is a wasteful number, since it uses less digits than its factorization.

831397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707.

The product of its digits is 4536, while the sum is 31.

The square root of 831397 is about 911.8097389258. The cubic root of 831397 is about 94.0306599850.

The spelling of 831397 in words is "eight hundred thirty-one thousand, three hundred ninety-seven".