Search a number
-
+
11331231 = 317435167
BaseRepresentation
bin101011001110…
…011010011111
3210022200112020
4223032122133
510400044411
61042511223
7165212442
oct53163237
923280466
1011331231
11643a35a
123965513
132469792
14170d659
15edc606
hexace69f

11331231 has 16 divisors (see below), whose sum is σ = 16372224. Its totient is φ = 6943104.

The previous prime is 11331227. The next prime is 11331233. The reversal of 11331231 is 13213311.

It is not a de Polignac number, because 11331231 - 22 = 11331227 is a prime.

It is a super-2 number, since 2×113312312 = 256793591950722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11331231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331233) 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, 391 + ... + 4776.

It is an arithmetic number, because the mean of its divisors is an integer number (1023264).

Almost surely, 211331231 is an apocalyptic number.

11331231 is a deficient number, since it is larger than the sum of its proper divisors (5040993).

11331231 is a wasteful number, since it uses less digits than its factorization.

11331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230.

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

The square root of 11331231 is about 3366.1893886114. The cubic root of 11331231 is about 224.6082466992.

Adding to 11331231 its reverse (13213311), we get a palindrome (24544542).

The spelling of 11331231 in words is "eleven million, three hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 3 17 43 51 129 731 2193 5167 15501 87839 222181 263517 666543 3777077 11331231