Base | Representation |
---|---|
bin | 10110100110001000… |
… | …01010110101000111 |
3 | 1011022102122200010212 |
4 | 23103010022311013 |
5 | 144321020120403 |
6 | 5323425510035 |
7 | 606421653356 |
oct | 132304126507 |
9 | 34272580125 |
10 | 12131020103 |
11 | 516570aa54 |
12 | 24267a231b |
13 | 11b4349707 |
14 | 8311a599d |
15 | 4b00014d8 |
hex | 2d310ad47 |
12131020103 has 8 divisors (see below), whose sum is σ = 12188262240. Its totient is φ = 12073835520.
The previous prime is 12131020093. The next prime is 12131020159. The reversal of 12131020103 is 30102013121.
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 12131020103 - 220 = 12129971527 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12131023103) 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, 441926 + ... + 468572.
It is an arithmetic number, because the mean of its divisors is an integer number (1523532780).
Almost surely, 212131020103 is an apocalyptic number.
12131020103 is a deficient number, since it is larger than the sum of its proper divisors (57242137).
12131020103 is a wasteful number, since it uses less digits than its factorization.
12131020103 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 28777.
The product of its (nonzero) digits is 36, while the sum is 14.
Adding to 12131020103 its reverse (30102013121), we get a palindrome (42233033224).
The spelling of 12131020103 in words is "twelve billion, one hundred thirty-one million, twenty thousand, one hundred three".
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