Base | Representation |
---|---|
bin | 1111100000110… |
… | …10010010100001 |
3 | 100001212100022120 |
4 | 13300122102201 |
5 | 231303143410 |
6 | 20525054453 |
7 | 3140044656 |
oct | 760322241 |
9 | 301770276 |
10 | 130131105 |
11 | 67501475 |
12 | 376b7429 |
13 | 20c63370 |
14 | 133d5c2d |
15 | b657570 |
hex | 7c1a4a1 |
130131105 has 32 divisors (see below), whose sum is σ = 225886080. Its totient is φ = 63590400.
The previous prime is 130131103. The next prime is 130131137. The reversal of 130131105 is 501131031.
It is not a de Polignac number, because 130131105 - 21 = 130131103 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is not an unprimeable number, because it can be changed into a prime (130131103) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24705 + ... + 29505.
It is an arithmetic number, because the mean of its divisors is an integer number (7058940).
Almost surely, 2130131105 is an apocalyptic number.
130131105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
130131105 is a deficient number, since it is larger than the sum of its proper divisors (95754975).
130131105 is a wasteful number, since it uses less digits than its factorization.
130131105 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4961.
The product of its (nonzero) digits is 45, while the sum is 15.
The square root of 130131105 is about 11407.5021367519. The cubic root of 130131105 is about 506.7499399044.
Adding to 130131105 its reverse (501131031), we get a palindrome (631262136).
The spelling of 130131105 in words is "one hundred thirty million, one hundred thirty-one thousand, one hundred five".
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