Base | Representation |
---|---|
bin | 1111100000111… |
… | …01001001011101 |
3 | 100001212221101012 |
4 | 13300131021131 |
5 | 231304032223 |
6 | 20525225005 |
7 | 3140124053 |
oct | 760351135 |
9 | 301787335 |
10 | 130142813 |
11 | 6750a249 |
12 | 37702165 |
13 | 20c687a8 |
14 | 133da1d3 |
15 | b65ac78 |
hex | 7c1d25d |
130142813 has 2 divisors, whose sum is σ = 130142814. Its totient is φ = 130142812.
The previous prime is 130142791. The next prime is 130142819. The reversal of 130142813 is 318241031.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 129458884 + 683929 = 11378^2 + 827^2 .
It is a cyclic number.
It is not a de Polignac number, because 130142813 - 210 = 130141789 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (130142819) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65071406 + 65071407.
It is an arithmetic number, because the mean of its divisors is an integer number (65071407).
Almost surely, 2130142813 is an apocalyptic number.
It is an amenable number.
130142813 is a deficient number, since it is larger than the sum of its proper divisors (1).
130142813 is an equidigital number, since it uses as much as digits as its factorization.
130142813 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 576, while the sum is 23.
The square root of 130142813 is about 11408.0152962731. The cubic root of 130142813 is about 506.7651370149.
Adding to 130142813 its reverse (318241031), we get a palindrome (448383844).
The spelling of 130142813 in words is "one hundred thirty million, one hundred forty-two thousand, eight hundred thirteen".
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