Base | Representation |
---|---|
bin | 11011011110101… |
… | …10001100001111 |
3 | 121001202101210001 |
4 | 31233112030033 |
5 | 433002443341 |
6 | 34512425131 |
7 | 5466230524 |
oct | 1557261417 |
9 | 531671701 |
10 | 230515471 |
11 | 10913575a |
12 | 652481a7 |
13 | 389acab4 |
14 | 2288714b |
15 | 15385d31 |
hex | dbd630f |
230515471 has 4 divisors (see below), whose sum is σ = 230603152. Its totient is φ = 230427792.
The previous prime is 230515469. The next prime is 230515477. The reversal of 230515471 is 174515032.
It is a happy number.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 230515471 - 21 = 230515469 is a prime.
It is a super-3 number, since 3×2305154713 (a number of 26 digits) contains 333 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (230515477) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39771 + ... + 45196.
It is an arithmetic number, because the mean of its divisors is an integer number (57650788).
Almost surely, 2230515471 is an apocalyptic number.
230515471 is a deficient number, since it is larger than the sum of its proper divisors (87681).
230515471 is an equidigital number, since it uses as much as digits as its factorization.
230515471 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 87680.
The product of its (nonzero) digits is 4200, while the sum is 28.
The square root of 230515471 is about 15182.7359523901. The cubic root of 230515471 is about 613.1499437599.
The spelling of 230515471 in words is "two hundred thirty million, five hundred fifteen thousand, four hundred seventy-one".
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