Base | Representation |
---|---|
bin | 11011111101010110… |
… | …000100000011111111 |
3 | 2212111011100100102200 |
4 | 123331112010003333 |
5 | 442440134120411 |
6 | 21442513322543 |
7 | 2111633454465 |
oct | 337526040377 |
9 | 85434310380 |
10 | 30020223231 |
11 | 118056a7049 |
12 | 5999866453 |
13 | 2aa5625ccb |
14 | 164add0835 |
15 | baa7c0e56 |
hex | 6fd5840ff |
30020223231 has 96 divisors (see below), whose sum is σ = 48589632000. Its totient is φ = 17774152704.
The previous prime is 30020223203. The next prime is 30020223251. The reversal of 30020223231 is 13232202003.
It is a happy number.
30020223231 is a `hidden beast` number, since 300 + 20 + 22 + 323 + 1 = 666.
It is not a de Polignac number, because 30020223231 - 213 = 30020215039 is a prime.
It is a super-2 number, since 2×300202232312 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30020223251) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 48654835 + ... + 48655451.
It is an arithmetic number, because the mean of its divisors is an integer number (506142000).
Almost surely, 230020223231 is an apocalyptic number.
30020223231 is a deficient number, since it is larger than the sum of its proper divisors (18569408769).
30020223231 is a wasteful number, since it uses less digits than its factorization.
30020223231 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 893 (or 890 counting only the distinct ones).
The product of its (nonzero) digits is 432, while the sum is 18.
Adding to 30020223231 its reverse (13232202003), we get a palindrome (43252425234).
The spelling of 30020223231 in words is "thirty billion, twenty million, two hundred twenty-three thousand, two hundred thirty-one".
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