Base | Representation |
---|---|
bin | 11011100010011… |
… | …10111101010011 |
3 | 121002200112022210 |
4 | 31301032331103 |
5 | 433114311011 |
6 | 34531203203 |
7 | 5503360632 |
oct | 1561167523 |
9 | 532615283 |
10 | 231010131 |
11 | 109443370 |
12 | 65446503 |
13 | 38b23cb1 |
14 | 22975519 |
15 | 154326a6 |
hex | dc4ef53 |
231010131 has 16 divisors (see below), whose sum is σ = 339102720. Its totient is φ = 138719520.
The previous prime is 231010103. The next prime is 231010223. The reversal of 231010131 is 131010132.
It is not a de Polignac number, because 231010131 - 26 = 231010067 is a prime.
It is a super-2 number, since 2×2310101312 = 106731361249274322, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (231010231) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28515 + ... + 35708.
It is an arithmetic number, because the mean of its divisors is an integer number (21193920).
Almost surely, 2231010131 is an apocalyptic number.
231010131 is a deficient number, since it is larger than the sum of its proper divisors (108092589).
231010131 is a wasteful number, since it uses less digits than its factorization.
231010131 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 64346.
The product of its (nonzero) digits is 18, while the sum is 12.
The square root of 231010131 is about 15199.0174353476. The cubic root of 231010131 is about 613.5882137793.
Adding to 231010131 its reverse (131010132), we get a palindrome (362020263).
Subtracting from 231010131 its reverse (131010132), we obtain a palindrome (99999999).
It can be divided in two parts, 2310101 and 31, that added together give a palindrome (2310132).
The spelling of 231010131 in words is "two hundred thirty-one million, ten thousand, one hundred thirty-one".
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