Base | Representation |
---|---|
bin | 111001110100… |
… | …0101000110101 |
3 | 2010001001122012 |
4 | 1303220220311 |
5 | 30230004023 |
6 | 3001414005 |
7 | 515441063 |
oct | 163505065 |
9 | 63031565 |
10 | 30313013 |
11 | 16124685 |
12 | a19a305 |
13 | 63845c3 |
14 | 4051033 |
15 | 29db978 |
hex | 1ce8a35 |
30313013 has 2 divisors, whose sum is σ = 30313014. Its totient is φ = 30313012.
The previous prime is 30313001. The next prime is 30313039. The reversal of 30313013 is 31031303.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 29669809 + 643204 = 5447^2 + 802^2 .
It is an emirp because it is prime and its reverse (31031303) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30313013 - 218 = 30050869 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30313043) 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 as a sum of consecutive naturals, namely, 15156506 + 15156507.
It is an arithmetic number, because the mean of its divisors is an integer number (15156507).
Almost surely, 230313013 is an apocalyptic number.
It is an amenable number.
30313013 is a deficient number, since it is larger than the sum of its proper divisors (1).
30313013 is an equidigital number, since it uses as much as digits as its factorization.
30313013 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 81, while the sum is 14.
The square root of 30313013 is about 5505.7254744493. The cubic root of 30313013 is about 311.8001850387.
Adding to 30313013 its reverse (31031303), we get a palindrome (61344316).
The spelling of 30313013 in words is "thirty million, three hundred thirteen thousand, thirteen".
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