Base | Representation |
---|---|
bin | 111001110111… |
… | …0001000011001 |
3 | 2010002012111112 |
4 | 1303232020121 |
5 | 30231214023 |
6 | 3002110105 |
7 | 515563505 |
oct | 163561031 |
9 | 63065445 |
10 | 30335513 |
11 | 1613a57a |
12 | a1ab335 |
13 | 6391910 |
14 | 4059305 |
15 | 29e3478 |
hex | 1cee219 |
30335513 has 4 divisors (see below), whose sum is σ = 32669028. Its totient is φ = 28002000.
The previous prime is 30335491. The next prime is 30335519. The reversal of 30335513 is 31553303.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31553303 = 2383 ⋅13241.
It can be written as a sum of positive squares in 2 ways, for example, as 4853209 + 25482304 = 2203^2 + 5048^2 .
It is not a de Polignac number, because 30335513 - 210 = 30334489 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30335519) 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, 1166738 + ... + 1166763.
It is an arithmetic number, because the mean of its divisors is an integer number (8167257).
Almost surely, 230335513 is an apocalyptic number.
It is an amenable number.
30335513 is a deficient number, since it is larger than the sum of its proper divisors (2333515).
30335513 is a wasteful number, since it uses less digits than its factorization.
30335513 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2333514.
The product of its (nonzero) digits is 2025, while the sum is 23.
The square root of 30335513 is about 5507.7684228733. The cubic root of 30335513 is about 311.8773110914.
Adding to 30335513 its reverse (31553303), we get a palindrome (61888816).
The spelling of 30335513 in words is "thirty million, three hundred thirty-five thousand, five hundred thirteen".
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