Base | Representation |
---|---|
bin | 11000101001010010… |
… | …00111010110100111 |
3 | 1021011002212211110220 |
4 | 30110221013112213 |
5 | 204044143133411 |
6 | 10024531015423 |
7 | 645611356521 |
oct | 142451072647 |
9 | 37132784426 |
10 | 13231224231 |
11 | 567a754665 |
12 | 269313a573 |
13 | 132b26c284 |
14 | 8d7358a11 |
15 | 5268c7b06 |
hex | 314a475a7 |
13231224231 has 8 divisors (see below), whose sum is σ = 17883298800. Its totient is φ = 8699982912.
The previous prime is 13231224217. The next prime is 13231224247. The reversal of 13231224231 is 13242213231.
13231224231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 13231224231 - 217 = 13231093159 is a prime.
It is a super-2 number, since 2×132312242312 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13231224271) 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 7 ways as a sum of consecutive naturals, for example, 30208056 + ... + 30208493.
It is an arithmetic number, because the mean of its divisors is an integer number (2235412350).
Almost surely, 213231224231 is an apocalyptic number.
13231224231 is a deficient number, since it is larger than the sum of its proper divisors (4652074569).
13231224231 is an equidigital number, since it uses as much as digits as its factorization.
13231224231 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 60416625.
The product of its digits is 1728, while the sum is 24.
Adding to 13231224231 its reverse (13242213231), we get a palindrome (26473437462).
The spelling of 13231224231 in words is "thirteen billion, two hundred thirty-one million, two hundred twenty-four thousand, two hundred thirty-one".
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