Base | Representation |
---|---|
bin | 11100001001111010… |
… | …000111110000001000 |
3 | 2220000211222000201012 |
4 | 130021322013300020 |
5 | 443403114031440 |
6 | 21515443143052 |
7 | 2120103164264 |
oct | 341172076010 |
9 | 86024860635 |
10 | 30231002120 |
11 | 11903681380 |
12 | 5a38374a88 |
13 | 2b0a1b5547 |
14 | 166adbb0a4 |
15 | bbe058e65 |
hex | 709e87c08 |
30231002120 has 64 divisors (see below), whose sum is σ = 74618107200. Its totient is φ = 10931649280.
The previous prime is 30231002101. The next prime is 30231002147. The reversal of 30231002120 is 2120013203.
It is a happy number.
It is a junction number, because it is equal to n+sod(n) for n = 30231002095 and 30231002104.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113159 + ... + 270678.
It is an arithmetic number, because the mean of its divisors is an integer number (1165907925).
Almost surely, 230231002120 is an apocalyptic number.
It is an amenable number.
30231002120 is an abundant number, since it is smaller than the sum of its proper divisors (44387105080).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30231002120 is a wasteful number, since it uses less digits than its factorization.
30231002120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 384038 (or 384034 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 14.
Adding to 30231002120 its reverse (2120013203), we get a palindrome (32351015323).
The spelling of 30231002120 in words is "thirty billion, two hundred thirty-one million, two thousand, one hundred twenty".
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