Base | Representation |
---|---|
bin | 11011011110101… |
… | …01011100101111 |
3 | 121001202020121110 |
4 | 31233111130233 |
5 | 433002344211 |
6 | 34512403103 |
7 | 5466215622 |
oct | 1557253457 |
9 | 531666543 |
10 | 230512431 |
11 | 109133446 |
12 | 65246493 |
13 | 389ab5b6 |
14 | 22885db9 |
15 | 15384ea6 |
hex | dbd572f |
230512431 has 8 divisors (see below), whose sum is σ = 308085120. Its totient is φ = 153307352.
The previous prime is 230512411. The next prime is 230512433. The reversal of 230512431 is 134215032.
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 230512431 - 223 = 222123823 is a prime.
It is a super-2 number, since 2×2305124312 = 106271961691059522, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 230512398 and 230512407.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (230512433) 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 7 ways as a sum of consecutive naturals, for example, 90435 + ... + 92948.
It is an arithmetic number, because the mean of its divisors is an integer number (38510640).
Almost surely, 2230512431 is an apocalyptic number.
230512431 is a deficient number, since it is larger than the sum of its proper divisors (77572689).
230512431 is a wasteful number, since it uses less digits than its factorization.
230512431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 183805.
The product of its (nonzero) digits is 720, while the sum is 21.
The square root of 230512431 is about 15182.6358383517. The cubic root of 230512431 is about 613.1472483746.
Adding to 230512431 its reverse (134215032), we get a palindrome (364727463).
The spelling of 230512431 in words is "two hundred thirty million, five hundred twelve thousand, four hundred thirty-one".
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