Base | Representation |
---|---|
bin | 110100101011000011… |
… | …0001100001101101001 |
3 | 101210222002012220200001 |
4 | 1221112012030031221 |
5 | 3323124041110121 |
6 | 123544053143001 |
7 | 11113026563563 |
oct | 1512606141551 |
9 | 353862186601 |
10 | 113113613161 |
11 | 43a7575a82a |
12 | 19b0962aa61 |
13 | a8885b0263 |
14 | 5690922333 |
15 | 2e2062e991 |
hex | 1a5618c369 |
113113613161 has 32 divisors (see below), whose sum is σ = 119834931200. Its totient is φ = 106628322240.
The previous prime is 113113613153. The next prime is 113113613189. The reversal of 113113613161 is 161316311311.
113113613161 is a nontrivial binomial coefficient, being equal to C(475634, 2).
It is a cyclic number.
It is not a de Polignac number, because 113113613161 - 23 = 113113613153 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (113113613191) 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 31 ways as a sum of consecutive naturals, for example, 77527450 + ... + 77528908.
It is an arithmetic number, because the mean of its divisors is an integer number (3744841600).
Almost surely, 2113113613161 is an apocalyptic number.
113113613161 is the 475633-rd triangular number and also the 237817-th hexagonal number.
113113613161 is the 158545-th centered nonagonal number.
It is an amenable number.
113113613161 is a deficient number, since it is larger than the sum of its proper divisors (6721318039).
113113613161 is a wasteful number, since it uses less digits than its factorization.
113113613161 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1949.
The product of its digits is 972, while the sum is 28.
Adding to 113113613161 its reverse (161316311311), we get a palindrome (274429924472).
The spelling of 113113613161 in words is "one hundred thirteen billion, one hundred thirteen million, six hundred thirteen thousand, one hundred sixty-one".
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