Base | Representation |
---|---|
bin | 11100011011101111… |
… | …110111110001010001 |
3 | 2220210201011012012221 |
4 | 130123233313301101 |
5 | 1000011224230410 |
6 | 22005254221041 |
7 | 2130366211606 |
oct | 343357676121 |
9 | 86721135187 |
10 | 30530305105 |
11 | 11a4761a113 |
12 | 5b00654781 |
13 | 2b571cacc1 |
14 | 1698a4c6ad |
15 | bda47b4da |
hex | 71bbf7c51 |
30530305105 has 8 divisors (see below), whose sum is σ = 37236962664. Its totient is φ = 24023846400.
The previous prime is 30530305093. The next prime is 30530305109. The reversal of 30530305105 is 50150303503.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 158180929 + 30372124176 = 12577^2 + 174276^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30530305105 - 227 = 30396087377 is a prime.
It is a super-2 number, since 2×305303051052 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 30530305105.
It is not an unprimeable number, because it can be changed into a prime (30530305109) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50049376 + ... + 50049985.
It is an arithmetic number, because the mean of its divisors is an integer number (4654620333).
Almost surely, 230530305105 is an apocalyptic number.
It is an amenable number.
30530305105 is a deficient number, since it is larger than the sum of its proper divisors (6706657559).
30530305105 is a wasteful number, since it uses less digits than its factorization.
30530305105 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 100099427.
The product of its (nonzero) digits is 3375, while the sum is 25.
Adding to 30530305105 its reverse (50150303503), we get a palindrome (80680608608).
The spelling of 30530305105 in words is "thirty billion, five hundred thirty million, three hundred five thousand, one hundred five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.100 sec. • engine limits •