Base | Representation |
---|---|
bin | 110010011110… |
… | …000000111111 |
3 | 220220011100022 |
4 | 302132000333 |
5 | 11341331033 |
6 | 1151322355 |
7 | 220311563 |
oct | 62360077 |
9 | 26804308 |
10 | 13230143 |
11 | 7517003 |
12 | 45203bb |
13 | 2982bb4 |
14 | 1a856a3 |
15 | 1265098 |
hex | c9e03f |
13230143 has 4 divisors (see below), whose sum is σ = 13260720. Its totient is φ = 13199568.
The previous prime is 13230109. The next prime is 13230169. The reversal of 13230143 is 34103231.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34103231 = 2281 ⋅14951.
It is a cyclic number.
It is not a de Polignac number, because 13230143 - 26 = 13230079 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13230043) 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, 14630 + ... + 15507.
It is an arithmetic number, because the mean of its divisors is an integer number (3315180).
Almost surely, 213230143 is an apocalyptic number.
13230143 is a deficient number, since it is larger than the sum of its proper divisors (30577).
13230143 is an equidigital number, since it uses as much as digits as its factorization.
13230143 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 30576.
The product of its (nonzero) digits is 216, while the sum is 17.
The square root of 13230143 is about 3637.3263532435. The cubic root of 13230143 is about 236.5129070247.
Adding to 13230143 its reverse (34103231), we get a palindrome (47333374).
The spelling of 13230143 in words is "thirteen million, two hundred thirty thousand, one hundred forty-three".
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