Base | Representation |
---|---|
bin | 10011101011011100… |
… | …101010110010100001 |
3 | 2000112120212202022122 |
4 | 103223130222302201 |
5 | 321233241431431 |
6 | 13412413514025 |
7 | 1345423202465 |
oct | 235334526241 |
9 | 60476782278 |
10 | 21130030241 |
11 | 8a63395511 |
12 | 41184a2915 |
13 | 1cb9841298 |
14 | 10464004a5 |
15 | 83a084a7b |
hex | 4eb72aca1 |
21130030241 has 8 divisors (see below), whose sum is σ = 22069731264. Its totient is φ = 20192079600.
The previous prime is 21130030213. The next prime is 21130030247. The reversal of 21130030241 is 14203003112.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 21130030241 - 214 = 21130013857 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (21130030247) 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, 412886 + ... + 461231.
It is an arithmetic number, because the mean of its divisors is an integer number (2758716408).
Almost surely, 221130030241 is an apocalyptic number.
It is an amenable number.
21130030241 is a deficient number, since it is larger than the sum of its proper divisors (939701023).
21130030241 is a wasteful number, since it uses less digits than its factorization.
21130030241 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 875191.
The product of its (nonzero) digits is 144, while the sum is 17.
Adding to 21130030241 its reverse (14203003112), we get a palindrome (35333033353).
The spelling of 21130030241 in words is "twenty-one billion, one hundred thirty million, thirty thousand, two hundred forty-one".
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