Base | Representation |
---|---|
bin | 10110100110001001… |
… | …00101101010101110 |
3 | 1011022102212020221020 |
4 | 23103010211222232 |
5 | 144321032130110 |
6 | 5323432115010 |
7 | 606422622015 |
oct | 132304455256 |
9 | 34272766836 |
10 | 12131130030 |
11 | 51657855a8 |
12 | 2426835a66 |
13 | 11b4387766 |
14 | 8311d3a7c |
15 | 4b0023d70 |
hex | 2d3125aae |
12131130030 has 16 divisors (see below), whose sum is σ = 29114712144. Its totient is φ = 3234968000.
The previous prime is 12131130017. The next prime is 12131130031. The reversal of 12131130030 is 3003113121.
12131130030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a junction number, because it is equal to n+sod(n) for n = 12131129991 and 12131130009.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12131130031) 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 7 ways as a sum of consecutive naturals, for example, 202185471 + ... + 202185530.
It is an arithmetic number, because the mean of its divisors is an integer number (1819669509).
Almost surely, 212131130030 is an apocalyptic number.
12131130030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12131130030 is an abundant number, since it is smaller than the sum of its proper divisors (16983582114).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12131130030 is a wasteful number, since it uses less digits than its factorization.
12131130030 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 404371011.
The product of its (nonzero) digits is 54, while the sum is 15.
Adding to 12131130030 its reverse (3003113121), we get a palindrome (15134243151).
The spelling of 12131130030 in words is "twelve billion, one hundred thirty-one million, one hundred thirty thousand, thirty".
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