Base | Representation |
---|---|
bin | 110001101101… |
… | …001011110011 |
3 | 220111222222110 |
4 | 301231023303 |
5 | 11313431011 |
6 | 1143140403 |
7 | 215516502 |
oct | 61551363 |
9 | 26458873 |
10 | 13030131 |
11 | 739a804 |
12 | 4444703 |
13 | 2912b4a |
14 | 1a32839 |
15 | 1225ba6 |
hex | c6d2f3 |
13030131 has 4 divisors (see below), whose sum is σ = 17373512. Its totient is φ = 8686752.
The previous prime is 13030123. The next prime is 13030151. The reversal of 13030131 is 13103031.
It is a semiprime because it is the product of two primes.
It is not a de Polignac number, because 13030131 - 23 = 13030123 is a prime.
It is a super-2 number, since 2×130301312 = 339568627754322, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (13030151) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2171686 + ... + 2171691.
It is an arithmetic number, because the mean of its divisors is an integer number (4343378).
Almost surely, 213030131 is an apocalyptic number.
13030131 is a deficient number, since it is larger than the sum of its proper divisors (4343381).
13030131 is an equidigital number, since it uses as much as digits as its factorization.
13030131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4343380.
The product of its (nonzero) digits is 27, while the sum is 12.
The square root of 13030131 is about 3609.7272750168. The cubic root of 13030131 is about 235.3149903089.
Adding to 13030131 its reverse (13103031), we get a palindrome (26133162).
Subtracting 13030131 from its reverse (13103031), we obtain a square (72900 = 2702).
The spelling of 13030131 in words is "thirteen million, thirty thousand, one hundred thirty-one".
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