859231 has 4 divisors (see below), whose sum is σ = 909792. Its totient is φ = 808672.

The previous prime is 859223. The next prime is 859249. The reversal of 859231 is 132958.

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 859231 - 2³ = 859223 is a prime.

It is a super-2 number, since 2×859231² = 1476555822722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 859231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859031) 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, 25255 + ... + 25288.

It is an arithmetic number, because the mean of its divisors is an integer number (227448).

2⁸⁵⁹²³¹ is an apocalyptic number.

859231 is a deficient number, since it is larger than the sum of its proper divisors (50561).

859231 is a wasteful number, since it uses less digits than its factorization.

859231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50560.

The product of its digits is 2160, while the sum is 28.

The square root of 859231 is about 926.9471398090. The cubic root of 859231 is about 95.0685009179.

It can be divided in two parts, 85 and 9231, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 859231 in words is "eight hundred fifty-nine thousand, two hundred thirty-one".