Search a number
9231 = 317181
BaseRepresentation
bin10010000001111
3110122220
42100033
5243411
6110423
735625
oct22017
913586
109231
116a32
125413
134281
143515
152b06
hex240f

9231 has 8 divisors (see below), whose sum is σ = 13104. Its totient is φ = 5760.

The previous prime is 9227. The next prime is 9239. The reversal of 9231 is 1329.

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

It is not a de Polignac number, because 9231 - 22 = 9227 is a prime.

It is a super-2 number, since 2×92312 = 170422722, which contains 22 as substring.

9231 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9239) 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, 40 + ... + 141.

It is an arithmetic number, because the mean of its divisors is an integer number (1638).

29231 is an apocalyptic number.

9231 is a deficient number, since it is larger than the sum of its proper divisors (3873).

9231 is a wasteful number, since it uses less digits than its factorization.

9231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201.

The product of its digits is 54, while the sum is 15.

The square root of 9231 is about 96.0780932367. The cubic root of 9231 is about 20.9772997337.

Subtracting from 9231 its sum of digits (15), we obtain a square (9216 = 962).

The spelling of 9231 in words is "nine thousand, two hundred thirty-one".

Divisors: 1 3 17 51 181 543 3077 9231