Base | Representation |
---|---|
bin | 11100010010011110… |
… | …000101010111111011 |
3 | 2220101212020221211201 |
4 | 130102132011113323 |
5 | 444201402203131 |
6 | 21542014035031 |
7 | 2123466146002 |
oct | 342236052773 |
9 | 86355227751 |
10 | 30374647291 |
11 | 1197777309a |
12 | 5a784a8a77 |
13 | 2b30b9aaa1 |
14 | 16820cdc39 |
15 | bcb980761 |
hex | 7127855fb |
30374647291 has 2 divisors, whose sum is σ = 30374647292. Its totient is φ = 30374647290.
The previous prime is 30374647283. The next prime is 30374647339. The reversal of 30374647291 is 19274647303.
It is a weak prime.
It is an emirp because it is prime and its reverse (19274647303) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30374647291 - 23 = 30374647283 is a prime.
It is not a weakly prime, because it can be changed into another prime (30374647271) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15187323645 + 15187323646.
It is an arithmetic number, because the mean of its divisors is an integer number (15187323646).
Almost surely, 230374647291 is an apocalyptic number.
30374647291 is a deficient number, since it is larger than the sum of its proper divisors (1).
30374647291 is an equidigital number, since it uses as much as digits as its factorization.
30374647291 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 762048, while the sum is 46.
The spelling of 30374647291 in words is "thirty billion, three hundred seventy-four million, six hundred forty-seven thousand, two hundred ninety-one".
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