Base | Representation |
---|---|
bin | 1100101111101101… |
… | …0000110000011101 |
3 | 22211102210112222111 |
4 | 3023323100300131 |
5 | 24001323404411 |
6 | 1323254314021 |
7 | 150532440445 |
oct | 31373206035 |
9 | 8742715874 |
10 | 3421309981 |
11 | 14a6270911 |
12 | 7b5958911 |
13 | 426a7759b |
14 | 246557125 |
15 | 150566721 |
hex | cbed0c1d |
3421309981 has 2 divisors, whose sum is σ = 3421309982. Its totient is φ = 3421309980.
The previous prime is 3421309973. The next prime is 3421310017. The reversal of 3421309981 is 1899031243.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1761480900 + 1659829081 = 41970^2 + 40741^2 .
It is an emirp because it is prime and its reverse (1899031243) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 3421309981 - 23 = 3421309973 is a prime.
It is a super-2 number, since 2×34213099812 = 23410723972180440722, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (3421309951) 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 as a sum of consecutive naturals, namely, 1710654990 + 1710654991.
It is an arithmetic number, because the mean of its divisors is an integer number (1710654991).
Almost surely, 23421309981 is an apocalyptic number.
It is an amenable number.
3421309981 is a deficient number, since it is larger than the sum of its proper divisors (1).
3421309981 is an equidigital number, since it uses as much as digits as its factorization.
3421309981 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 46656, while the sum is 40.
The square root of 3421309981 is about 58491.9650977807. The cubic root of 3421309981 is about 1506.8295951526.
The spelling of 3421309981 in words is "three billion, four hundred twenty-one million, three hundred nine thousand, nine hundred eighty-one".
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