Base | Representation |
---|---|
bin | 1111101101111… |
… | …00001001101101 |
3 | 100012002022010211 |
4 | 13312330021231 |
5 | 232222431134 |
6 | 21025502421 |
7 | 3160433650 |
oct | 766741155 |
9 | 305068124 |
10 | 131842669 |
11 | 68470392 |
12 | 381a1a11 |
13 | 2141241a |
14 | 1371d897 |
15 | b894764 |
hex | 7dbc26d |
131842669 has 8 divisors (see below), whose sum is σ = 152800128. Its totient is φ = 111415920.
The previous prime is 131842663. The next prime is 131842681. The reversal of 131842669 is 966248131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 131842669 - 223 = 123454061 is a prime.
It is a super-2 number, since 2×1318426692 = 34764978738087122, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131842663) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132142 + ... + 133135.
It is an arithmetic number, because the mean of its divisors is an integer number (19100016).
Almost surely, 2131842669 is an apocalyptic number.
It is an amenable number.
131842669 is a deficient number, since it is larger than the sum of its proper divisors (20957459).
131842669 is an equidigital number, since it uses as much as digits as its factorization.
131842669 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 265355.
The product of its digits is 62208, while the sum is 40.
The square root of 131842669 is about 11482.2762987136. The cubic root of 131842669 is about 508.9619652940.
The spelling of 131842669 in words is "one hundred thirty-one million, eight hundred forty-two thousand, six hundred sixty-nine".
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