Base | Representation |
---|---|
bin | 1111100001100… |
… | …00110000100111 |
3 | 100002001000120101 |
4 | 13300300300213 |
5 | 231314120033 |
6 | 20531044531 |
7 | 3140610211 |
oct | 760606047 |
9 | 302030511 |
10 | 130223143 |
11 | 67564636 |
12 | 37740747 |
13 | 20c9621b |
14 | 1341b5b1 |
15 | b67497d |
hex | 7c30c27 |
130223143 has 4 divisors (see below), whose sum is σ = 132166840. Its totient is φ = 128279448.
The previous prime is 130223141. The next prime is 130223147. The reversal of 130223143 is 341322031.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341322031 = 89 ⋅3835079.
It is a cyclic number.
It is not a de Polignac number, because 130223143 - 21 = 130223141 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 130223143.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130223141) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971748 + ... + 971881.
It is an arithmetic number, because the mean of its divisors is an integer number (33041710).
Almost surely, 2130223143 is an apocalyptic number.
130223143 is a deficient number, since it is larger than the sum of its proper divisors (1943697).
130223143 is an equidigital number, since it uses as much as digits as its factorization.
130223143 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1943696.
The product of its (nonzero) digits is 432, while the sum is 19.
The square root of 130223143 is about 11411.5355233203. The cubic root of 130223143 is about 506.8693816512.
Adding to 130223143 its reverse (341322031), we get a palindrome (471545174).
The spelling of 130223143 in words is "one hundred thirty million, two hundred twenty-three thousand, one hundred forty-three".
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