Base | Representation |
---|---|
bin | 1101011101010010101… |
… | …0101011001001001001 |
3 | 211002202210220001101012 |
4 | 3113110222223021021 |
5 | 12242000003120431 |
6 | 254113512333305 |
7 | 22463244654302 |
oct | 3272452531111 |
9 | 732683801335 |
10 | 231201223241 |
11 | 8a06307700a |
12 | 389849a4235 |
13 | 18a57516451 |
14 | b293c977a9 |
15 | 603277b22b |
hex | 35d4aab249 |
231201223241 has 2 divisors, whose sum is σ = 231201223242. Its totient is φ = 231201223240.
The previous prime is 231201223147. The next prime is 231201223283. The reversal of 231201223241 is 142322102132.
231201223241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 160925334025 + 70275889216 = 401155^2 + 265096^2 .
It is a cyclic number.
It is not a de Polignac number, because 231201223241 - 218 = 231200961097 is a prime.
It is a Sophie Germain prime.
It is a Curzon number.
It is not a weakly prime, because it can be changed into another prime (231201223291) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115600611620 + 115600611621.
It is an arithmetic number, because the mean of its divisors is an integer number (115600611621).
Almost surely, 2231201223241 is an apocalyptic number.
It is an amenable number.
231201223241 is a deficient number, since it is larger than the sum of its proper divisors (1).
231201223241 is an equidigital number, since it uses as much as digits as its factorization.
231201223241 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1152, while the sum is 23.
Adding to 231201223241 its reverse (142322102132), we get a palindrome (373523325373).
The spelling of 231201223241 in words is "two hundred thirty-one billion, two hundred one million, two hundred twenty-three thousand, two hundred forty-one".
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