Base | Representation |
---|---|
bin | 10010101111110110… |
… | …101010010011001011 |
3 | 1220221220112200012002 |
4 | 102233312222103023 |
5 | 312211313223034 |
6 | 13125300141215 |
7 | 1311562653602 |
oct | 225766522313 |
9 | 56856480162 |
10 | 20130211019 |
11 | 859aa85536 |
12 | 3a9969780b |
13 | 1b8a668489 |
14 | d8d6dca39 |
15 | 7cc3dbe7e |
hex | 4afdaa4cb |
20130211019 has 2 divisors, whose sum is σ = 20130211020. Its totient is φ = 20130211018.
The previous prime is 20130211007. The next prime is 20130211033. The reversal of 20130211019 is 91011203102.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-20130211019 is a prime.
It is a super-2 number, since 2×201302110192 (a number of 21 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (20130211069) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065105509 + 10065105510.
It is an arithmetic number, because the mean of its divisors is an integer number (10065105510).
Almost surely, 220130211019 is an apocalyptic number.
20130211019 is a deficient number, since it is larger than the sum of its proper divisors (1).
20130211019 is an equidigital number, since it uses as much as digits as its factorization.
20130211019 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 108, while the sum is 20.
The spelling of 20130211019 in words is "twenty billion, one hundred thirty million, two hundred eleven thousand, nineteen".
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