Base | Representation |
---|---|
bin | 11011111101111111… |
… | …101000111100100011 |
3 | 2212111220212002000121 |
4 | 123331333220330203 |
5 | 443000431402321 |
6 | 21443543101111 |
7 | 2112125220106 |
oct | 337577507443 |
9 | 85456762017 |
10 | 30031122211 |
11 | 11810870672 |
12 | 59a1441797 |
13 | 2aa7970acc |
14 | 164c62a73d |
15 | bab725441 |
hex | 6fdfe8f23 |
30031122211 has 2 divisors, whose sum is σ = 30031122212. Its totient is φ = 30031122210.
The previous prime is 30031122197. The next prime is 30031122227. The reversal of 30031122211 is 11222113003.
It is an a-pointer prime, because the next prime (30031122227) can be obtained adding 30031122211 to its sum of digits (16).
It is a weak prime.
It is an emirp because it is prime and its reverse (11222113003) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30031122211 - 27 = 30031122083 is a prime.
It is not a weakly prime, because it can be changed into another prime (30031122271) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15015561105 + 15015561106.
It is an arithmetic number, because the mean of its divisors is an integer number (15015561106).
Almost surely, 230031122211 is an apocalyptic number.
30031122211 is a deficient number, since it is larger than the sum of its proper divisors (1).
30031122211 is an equidigital number, since it uses as much as digits as its factorization.
30031122211 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 72, while the sum is 16.
Adding to 30031122211 its reverse (11222113003), we get a palindrome (41253235214).
It can be divided in two parts, 3003 and 1122211, that multiplied together give a palindrome (3369999633).
The spelling of 30031122211 in words is "thirty billion, thirty-one million, one hundred twenty-two thousand, two hundred eleven".
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