Base | Representation |
---|---|
bin | 11011011110101… |
… | …10000110100001 |
3 | 121001202101021111 |
4 | 31233112012201 |
5 | 433002440410 |
6 | 34512423321 |
7 | 5466226462 |
oct | 1557260641 |
9 | 531671244 |
10 | 230515105 |
11 | 109135457 |
12 | 65247b41 |
13 | 389ac892 |
14 | 22886d69 |
15 | 15385b8a |
hex | dbd61a1 |
230515105 has 8 divisors (see below), whose sum is σ = 276705000. Its totient is φ = 184354176.
The previous prime is 230515091. The next prime is 230515151. The reversal of 230515105 is 501515032.
It can be written as a sum of positive squares in 4 ways, for example, as 8832784 + 221682321 = 2972^2 + 14889^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 230515105 - 211 = 230513057 is a prime.
It is a super-2 number, since 2×2305151052 = 106274427266322050, which contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18771 + ... + 28519.
It is an arithmetic number, because the mean of its divisors is an integer number (34588125).
Almost surely, 2230515105 is an apocalyptic number.
It is an amenable number.
230515105 is a deficient number, since it is larger than the sum of its proper divisors (46189895).
230515105 is an equidigital number, since it uses as much as digits as its factorization.
230515105 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 14483.
The product of its (nonzero) digits is 750, while the sum is 22.
The square root of 230515105 is about 15182.7238992218. The cubic root of 230515105 is about 613.1496192510.
The spelling of 230515105 in words is "two hundred thirty million, five hundred fifteen thousand, one hundred five".
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