Base | Representation |
---|---|
bin | 1111100000110… |
… | …10010001000101 |
3 | 100001212100012011 |
4 | 13300122101011 |
5 | 231303143023 |
6 | 20525054221 |
7 | 3140044465 |
oct | 760322105 |
9 | 301770164 |
10 | 130131013 |
11 | 675013a1 |
12 | 376b7371 |
13 | 20c632cc |
14 | 133d5ba5 |
15 | b65750d |
hex | 7c1a445 |
130131013 has 4 divisors (see below), whose sum is σ = 130224780. Its totient is φ = 130037248.
The previous prime is 130131011. The next prime is 130131017. The reversal of 130131013 is 310131031.
It is a happy number.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 32970564 + 97160449 = 5742^2 + 9857^2 .
It is a cyclic number.
It is not a de Polignac number, because 130131013 - 21 = 130131011 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 130130984 and 130131002.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130131011) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44770 + ... + 47587.
It is an arithmetic number, because the mean of its divisors is an integer number (32556195).
Almost surely, 2130131013 is an apocalyptic number.
It is an amenable number.
130131013 is a deficient number, since it is larger than the sum of its proper divisors (93767).
130131013 is an equidigital number, since it uses as much as digits as its factorization.
130131013 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 93766.
The product of its (nonzero) digits is 27, while the sum is 13.
The square root of 130131013 is about 11407.4981043172. The cubic root of 130131013 is about 506.7498204838.
Adding to 130131013 its reverse (310131031), we get a palindrome (440262044).
The spelling of 130131013 in words is "one hundred thirty million, one hundred thirty-one thousand, thirteen".
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