Base | Representation |
---|---|
bin | 111101000000101111… |
… | …0101001010000001001 |
3 | 110112012002201022201110 |
4 | 1322001132221100021 |
5 | 4121312424004113 |
6 | 140105041240533 |
7 | 12315554533242 |
oct | 1720136512011 |
9 | 415162638643 |
10 | 131021313033 |
11 | 5062512a796 |
12 | 21486933149 |
13 | c480664980 |
14 | 64acda3cc9 |
15 | 361c854bc3 |
hex | 1e817a9409 |
131021313033 has 8 divisors (see below), whose sum is σ = 188133167488. Its totient is φ = 80628500304.
The previous prime is 131021312957. The next prime is 131021313041. The reversal of 131021313033 is 330313120131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 131021313033 - 212 = 131021308937 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (131021313043) 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, 1679760385 + ... + 1679760462.
It is an arithmetic number, because the mean of its divisors is an integer number (23516645936).
Almost surely, 2131021313033 is an apocalyptic number.
131021313033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.
It is an amenable number.
131021313033 is a deficient number, since it is larger than the sum of its proper divisors (57111854455).
131021313033 is a wasteful number, since it uses less digits than its factorization.
131021313033 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3359520863.
The product of its (nonzero) digits is 486, while the sum is 21.
Adding to 131021313033 its reverse (330313120131), we get a palindrome (461334433164).
The spelling of 131021313033 in words is "one hundred thirty-one billion, twenty-one million, three hundred thirteen thousand, thirty-three".
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