Base | Representation |
---|---|
bin | 11100001000101110… |
… | …101110011100001001 |
3 | 2212222110202212221110 |
4 | 130020232232130021 |
5 | 443333034101031 |
6 | 21513455400533 |
7 | 2116443166014 |
oct | 341056563411 |
9 | 85873685843 |
10 | 30211237641 |
11 | 118a3501aa2 |
12 | 5a31823149 |
13 | 2b060853a0 |
14 | 166851437b |
15 | bbc452c46 |
hex | 708bae709 |
30211237641 has 16 divisors (see below), whose sum is σ = 45663410240. Its totient is φ = 17613028800.
The previous prime is 30211237621. The next prime is 30211237663. The reversal of 30211237641 is 14673211203.
It is a happy number.
It is not a de Polignac number, because 30211237641 - 210 = 30211236617 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 30211237599 and 30211237608.
It is not an unprimeable number, because it can be changed into a prime (30211237621) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20384710 + ... + 20386191.
It is an arithmetic number, because the mean of its divisors is an integer number (2853963140).
Almost surely, 230211237641 is an apocalyptic number.
It is an amenable number.
30211237641 is a deficient number, since it is larger than the sum of its proper divisors (15452172599).
30211237641 is a wasteful number, since it uses less digits than its factorization.
30211237641 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 40770936.
The product of its (nonzero) digits is 6048, while the sum is 30.
Adding to 30211237641 its reverse (14673211203), we get a palindrome (44884448844).
The spelling of 30211237641 in words is "thirty billion, two hundred eleven million, two hundred thirty-seven thousand, six hundred forty-one".
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