8205231 has 16 divisors (see below), whose sum is σ = 11628000. Its totient is φ = 5136768.

The previous prime is 8205221. The next prime is 8205233. The reversal of 8205231 is 1325028.

It is not a de Polignac number, because 8205231 - 2⁵ = 8205199 is a prime.

It is a super-2 number, since 2×8205231² = 134651631526722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8205198 and 8205207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8205233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1945 + ... + 4493.

It is an arithmetic number, because the mean of its divisors is an integer number (726750).

Almost surely, 2^8205231 is an apocalyptic number.

8205231 is a deficient number, since it is larger than the sum of its proper divisors (3422769).

8205231 is a wasteful number, since it uses less digits than its factorization.

8205231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 8205231 is about 2864.4774392548. The cubic root of 8205231 is about 201.6958383530.

The spelling of 8205231 in words is "eight million, two hundred five thousand, two hundred thirty-one".