Base | Representation |
---|---|
bin | 111101000011111110… |
… | …1010101010110111111 |
3 | 110112110200021021102222 |
4 | 1322013331111112333 |
5 | 4122023241140221 |
6 | 140123523235555 |
7 | 12321344535062 |
oct | 1720775252677 |
9 | 415420237388 |
10 | 131130021311 |
11 | 50680529943 |
12 | 214b7218bbb |
13 | c49a0370b3 |
14 | 64bd5c08d9 |
15 | 36271799ab |
hex | 1e87f555bf |
131130021311 has 8 divisors (see below), whose sum is σ = 138049898880. Its totient is φ = 124211973528.
The previous prime is 131130021301. The next prime is 131130021367. The reversal of 131130021311 is 113120031131.
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 131130021311 - 226 = 131062912447 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 131130021311.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131130021301) 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, 309101 + ... + 598166.
It is an arithmetic number, because the mean of its divisors is an integer number (17256237360).
Almost surely, 2131130021311 is an apocalyptic number.
131130021311 is a deficient number, since it is larger than the sum of its proper divisors (6919877569).
131130021311 is an equidigital number, since it uses as much as digits as its factorization.
131130021311 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 914893.
The product of its (nonzero) digits is 54, while the sum is 17.
Adding to 131130021311 its reverse (113120031131), we get a palindrome (244250052442).
The spelling of 131130021311 in words is "one hundred thirty-one billion, one hundred thirty million, twenty-one thousand, three hundred eleven".
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