Base | Representation |
---|---|
bin | 111001111000… |
… | …0100001100111 |
3 | 2010002200221201 |
4 | 1303300201213 |
5 | 30232022234 |
6 | 3002223331 |
7 | 515634214 |
oct | 163604147 |
9 | 63080851 |
10 | 30345319 |
11 | 16146984 |
12 | a1b4b47 |
13 | 6396214 |
14 | 405cb0b |
15 | 29e6314 |
hex | 1cf0867 |
30345319 has 2 divisors, whose sum is σ = 30345320. Its totient is φ = 30345318.
The previous prime is 30345317. The next prime is 30345347. The reversal of 30345319 is 91354303.
It is an a-pointer prime, because the next prime (30345347) can be obtained adding 30345319 to its sum of digits (28).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 30345319 - 21 = 30345317 is a prime.
It is a super-2 number, since 2×303453192 = 1841676770423522, which contains 22 as substring.
Together with 30345317, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30345313) 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, 15172659 + 15172660.
It is an arithmetic number, because the mean of its divisors is an integer number (15172660).
Almost surely, 230345319 is an apocalyptic number.
30345319 is a deficient number, since it is larger than the sum of its proper divisors (1).
30345319 is an equidigital number, since it uses as much as digits as its factorization.
30345319 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 4860, while the sum is 28.
The square root of 30345319 is about 5508.6585481404. The cubic root of 30345319 is about 311.9109124070.
The spelling of 30345319 in words is "thirty million, three hundred forty-five thousand, three hundred nineteen".
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