Base | Representation |
---|---|
bin | 11011011011110… |
… | …11000010111111 |
3 | 121001001102200002 |
4 | 31231323002333 |
5 | 432404022033 |
6 | 34500424515 |
7 | 5463114230 |
oct | 1555730277 |
9 | 531042602 |
10 | 230142143 |
11 | 108a00220 |
12 | 650a813b |
13 | 388abbaa |
14 | 227cb087 |
15 | 153103e8 |
hex | db7b0bf |
230142143 has 32 divisors (see below), whose sum is σ = 296110080. Its totient is φ = 173664000.
The previous prime is 230142139. The next prime is 230142167. The reversal of 230142143 is 341241032.
It is a cyclic number.
It is not a de Polignac number, because 230142143 - 22 = 230142139 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (230142113) 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 in 31 ways as a sum of consecutive naturals, for example, 849098 + ... + 849368.
It is an arithmetic number, because the mean of its divisors is an integer number (9253440).
Almost surely, 2230142143 is an apocalyptic number.
230142143 is a deficient number, since it is larger than the sum of its proper divisors (65967937).
230142143 is a wasteful number, since it uses less digits than its factorization.
230142143 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 599.
The product of its (nonzero) digits is 576, while the sum is 20.
The square root of 230142143 is about 15170.4364802072. The cubic root of 230142143 is about 612.8187588632.
Adding to 230142143 its reverse (341241032), we get a palindrome (571383175).
It can be divided in two parts, 2301 and 42143, that added together give a palindrome (44444).
The spelling of 230142143 in words is "two hundred thirty million, one hundred forty-two thousand, one hundred forty-three".
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