Base | Representation |
---|---|
bin | 1111101010101… |
… | …10101111000001 |
3 | 100011022012022111 |
4 | 13311112233001 |
5 | 232121133030 |
6 | 21012535321 |
7 | 3154053604 |
oct | 765265701 |
9 | 304265274 |
10 | 131427265 |
11 | 68207282 |
12 | 38021541 |
13 | 212c8318 |
14 | 1365233b |
15 | b81162a |
hex | 7d56bc1 |
131427265 has 8 divisors (see below), whose sum is σ = 157774248. Its totient is φ = 105100800.
The previous prime is 131427223. The next prime is 131427269. The reversal of 131427265 is 562724131.
It can be written as a sum of positive squares in 4 ways, for example, as 3969 + 131423296 = 63^2 + 11464^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 131427265 - 225 = 97872833 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (131427269) 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, 22929 + ... + 28081.
It is an arithmetic number, because the mean of its divisors is an integer number (19721781).
Almost surely, 2131427265 is an apocalyptic number.
It is an amenable number.
131427265 is a deficient number, since it is larger than the sum of its proper divisors (26346983).
131427265 is an equidigital number, since it uses as much as digits as its factorization.
131427265 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10259.
The product of its digits is 10080, while the sum is 31.
The square root of 131427265 is about 11464.1731058110. The cubic root of 131427265 is about 508.4268646911.
The spelling of 131427265 in words is "one hundred thirty-one million, four hundred twenty-seven thousand, two hundred sixty-five".
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