Base | Representation |
---|---|
bin | 11100001111111010… |
… | …111110110111010111 |
3 | 2220021212210201110021 |
4 | 130033322332313113 |
5 | 444104431004114 |
6 | 21533445410011 |
7 | 2122436551363 |
oct | 341772766727 |
9 | 86255721407 |
10 | 30331891159 |
11 | 1195561a849 |
12 | 5a66109907 |
13 | 2b2507a8bb |
14 | 167a5602a3 |
15 | bc7d37024 |
hex | 70febedd7 |
30331891159 has 2 divisors, whose sum is σ = 30331891160. Its totient is φ = 30331891158.
The previous prime is 30331891157. The next prime is 30331891169. The reversal of 30331891159 is 95119813303.
It is a weak prime.
It is an emirp because it is prime and its reverse (95119813303) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30331891159 - 21 = 30331891157 is a prime.
Together with 30331891157, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30331891153) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15165945579 + 15165945580.
It is an arithmetic number, because the mean of its divisors is an integer number (15165945580).
Almost surely, 230331891159 is an apocalyptic number.
30331891159 is a deficient number, since it is larger than the sum of its proper divisors (1).
30331891159 is an equidigital number, since it uses as much as digits as its factorization.
30331891159 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 87480, while the sum is 43.
The spelling of 30331891159 in words is "thirty billion, three hundred thirty-one million, eight hundred ninety-one thousand, one hundred fifty-nine".
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