Base | Representation |
---|---|
bin | 1111100011110… |
… | …00000001000101 |
3 | 100002120211221101 |
4 | 13301320001011 |
5 | 231402440023 |
6 | 20541220101 |
7 | 3143234146 |
oct | 761700105 |
9 | 302524841 |
10 | 130515013 |
11 | 67743952 |
12 | 37861631 |
13 | 21069025 |
14 | 13495acd |
15 | b6d11ad |
hex | 7c78045 |
130515013 has 4 divisors (see below), whose sum is σ = 133698348. Its totient is φ = 127331680.
The previous prime is 130514999. The next prime is 130515067. The reversal of 130515013 is 310515031.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310515031 = 853 ⋅364027.
It can be written as a sum of positive squares in 2 ways, for example, as 20223009 + 110292004 = 4497^2 + 10502^2 .
It is a cyclic number.
It is not a de Polignac number, because 130515013 - 25 = 130514981 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 (130515083) 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, 1591606 + ... + 1591687.
It is an arithmetic number, because the mean of its divisors is an integer number (33424587).
Almost surely, 2130515013 is an apocalyptic number.
It is an amenable number.
130515013 is a deficient number, since it is larger than the sum of its proper divisors (3183335).
130515013 is an equidigital number, since it uses as much as digits as its factorization.
130515013 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3183334.
The product of its (nonzero) digits is 225, while the sum is 19.
The square root of 130515013 is about 11424.3167410572. The cubic root of 130515013 is about 507.2477823312.
The spelling of 130515013 in words is "one hundred thirty million, five hundred fifteen thousand, thirteen".
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