Base | Representation |
---|---|
bin | 10010101111110110… |
… | …101111000000100110 |
3 | 1220221220120122122120 |
4 | 102233312233000212 |
5 | 312211314332220 |
6 | 13125300410410 |
7 | 1311563064051 |
oct | 225766570046 |
9 | 56856518576 |
10 | 20130230310 |
11 | 859aa98a83 |
12 | 3a996a6a06 |
13 | 1b8a6741a8 |
14 | d8d705a98 |
15 | 7cc3e2a40 |
hex | 4afdaf026 |
20130230310 has 16 divisors (see below), whose sum is σ = 48312552816. Its totient is φ = 5368061408.
The previous prime is 20130230299. The next prime is 20130230423. The reversal of 20130230310 is 1303203102.
It is a super-2 number, since 2×201302303102 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 20130230310.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335503809 + ... + 335503868.
It is an arithmetic number, because the mean of its divisors is an integer number (3019534551).
Almost surely, 220130230310 is an apocalyptic number.
20130230310 is an abundant number, since it is smaller than the sum of its proper divisors (28182322506).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20130230310 is a wasteful number, since it uses less digits than its factorization.
20130230310 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 671007687.
The product of its (nonzero) digits is 108, while the sum is 15.
Adding to 20130230310 its reverse (1303203102), we get a palindrome (21433433412).
The spelling of 20130230310 in words is "twenty billion, one hundred thirty million, two hundred thirty thousand, three hundred ten".
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