Base | Representation |
---|---|
bin | 111001010010010010… |
… | …0000110110111010101 |
3 | 102202112110212011112021 |
4 | 1302210210012313111 |
5 | 4003421110404023 |
6 | 132303053453141 |
7 | 11613356600032 |
oct | 1624444066725 |
9 | 382473764467 |
10 | 123020013013 |
11 | 48199654647 |
12 | 1ba131a11b1 |
13 | b7a6a87c11 |
14 | 5d5047c389 |
15 | 330019e35d |
hex | 1ca4906dd5 |
123020013013 has 32 divisors (see below), whose sum is σ = 132991372800. Its totient is φ = 113437449216.
The previous prime is 123020012981. The next prime is 123020013019. The reversal of 123020013013 is 310310020321.
It is not a de Polignac number, because 123020013013 - 25 = 123020012981 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (123020013019) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77712420 + ... + 77714002.
It is an arithmetic number, because the mean of its divisors is an integer number (4155980400).
Almost surely, 2123020013013 is an apocalyptic number.
It is an amenable number.
123020013013 is a deficient number, since it is larger than the sum of its proper divisors (9971359787).
123020013013 is a wasteful number, since it uses less digits than its factorization.
123020013013 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2221.
The product of its (nonzero) digits is 108, while the sum is 16.
Adding to 123020013013 its reverse (310310020321), we get a palindrome (433330033334).
The spelling of 123020013013 in words is "one hundred twenty-three billion, twenty million, thirteen thousand, thirteen".
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