Base | Representation |
---|---|
bin | 11100101011111101… |
… | …011110010011110011 |
3 | 2221111122222021200221 |
4 | 130223331132103303 |
5 | 1001040342300131 |
6 | 22052252153511 |
7 | 2140211166151 |
oct | 345375362363 |
9 | 87448867627 |
10 | 30802306291 |
11 | 1207710a689 |
12 | 5b77768897 |
13 | 2b9b674953 |
14 | 16c2c143d1 |
15 | c042a9411 |
hex | 72bf5e4f3 |
30802306291 has 2 divisors, whose sum is σ = 30802306292. Its totient is φ = 30802306290.
The previous prime is 30802306289. The next prime is 30802306309. The reversal of 30802306291 is 19260320803.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 30802306291 - 21 = 30802306289 is a prime.
Together with 30802306289, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (30802306091) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15401153145 + 15401153146.
It is an arithmetic number, because the mean of its divisors is an integer number (15401153146).
Almost surely, 230802306291 is an apocalyptic number.
30802306291 is a deficient number, since it is larger than the sum of its proper divisors (1).
30802306291 is an equidigital number, since it uses as much as digits as its factorization.
30802306291 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 15552, while the sum is 34.
The spelling of 30802306291 in words is "thirty billion, eight hundred two million, three hundred six thousand, two hundred ninety-one".
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