Base | Representation |
---|---|
bin | 1011100111010110… |
… | …0010001100111001 |
3 | 22001021201121011222 |
4 | 2321311202030321 |
5 | 22341130144211 |
6 | 1233213401425 |
7 | 140156010245 |
oct | 27165421471 |
9 | 8037647158 |
10 | 3117818681 |
11 | 135aa2235a |
12 | 730199275 |
13 | 3a8c26633 |
14 | 218115425 |
15 | 133ab81db |
hex | b9d62339 |
3117818681 has 8 divisors (see below), whose sum is σ = 3230229000. Its totient is φ = 3005735040.
The previous prime is 3117818677. The next prime is 3117818731. The reversal of 3117818681 is 1868187113.
It can be written as a sum of positive squares in 4 ways, for example, as 805651456 + 2312167225 = 28384^2 + 48085^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 3117818681 - 22 = 3117818677 is a prime.
It is a super-2 number, since 2×31178186812 = 19441586655185159522, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (3117818611) 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, 62156 + ... + 100493.
It is an arithmetic number, because the mean of its divisors is an integer number (403778625).
Almost surely, 23117818681 is an apocalyptic number.
It is an amenable number.
3117818681 is a deficient number, since it is larger than the sum of its proper divisors (112410319).
3117818681 is a wasteful number, since it uses less digits than its factorization.
3117818681 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 163339.
The product of its digits is 64512, while the sum is 44.
The square root of 3117818681 is about 55837.4308237763. The cubic root of 3117818681 is about 1460.8881005965. Note that the first 3 decimals are identical.
The spelling of 3117818681 in words is "three billion, one hundred seventeen million, eight hundred eighteen thousand, six hundred eighty-one".
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