Base | Representation |
---|---|
bin | 11100001111111000… |
… | …010110001100011111 |
3 | 2220021211111121202102 |
4 | 130033320112030133 |
5 | 444104241402122 |
6 | 21533422515315 |
7 | 2122430643233 |
oct | 341770261437 |
9 | 86254447672 |
10 | 30331200287 |
11 | 11955198783 |
12 | 5a65a35b3b |
13 | 2b24b982bb |
14 | 167a4205c3 |
15 | bc7c4c492 |
hex | 70fe1631f |
30331200287 has 2 divisors, whose sum is σ = 30331200288. Its totient is φ = 30331200286.
The previous prime is 30331200281. The next prime is 30331200307. The reversal of 30331200287 is 78200213303.
It is a weak prime.
It is an emirp because it is prime and its reverse (78200213303) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30331200287 - 212 = 30331196191 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30331200281) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15165600143 + 15165600144.
It is an arithmetic number, because the mean of its divisors is an integer number (15165600144).
Almost surely, 230331200287 is an apocalyptic number.
30331200287 is a deficient number, since it is larger than the sum of its proper divisors (1).
30331200287 is an equidigital number, since it uses as much as digits as its factorization.
30331200287 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 6048, while the sum is 29.
The spelling of 30331200287 in words is "thirty billion, three hundred thirty-one million, two hundred thousand, two hundred eighty-seven".
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