Base | Representation |
---|---|
bin | 10010101111011011… |
… | …001101000000001010 |
3 | 1220221101222222112121 |
4 | 102233123031000022 |
5 | 312202442410010 |
6 | 13124442001454 |
7 | 1311444534523 |
oct | 225733150012 |
9 | 56841888477 |
10 | 20123013130 |
11 | 8596a09670 |
12 | 3a971a628a |
13 | 1b8901817c |
14 | d8c78784a |
15 | 7cb9693da |
hex | 4af6cd00a |
20123013130 has 16 divisors (see below), whose sum is σ = 39514280544. Its totient is φ = 7317459280.
The previous prime is 20123013109. The next prime is 20123013133. The reversal of 20123013130 is 3131032102.
It is a super-4 number, since 4×201230131304 (a number of 42 digits) contains 4444 as substring.
It is not an unprimeable number, because it can be changed into a prime (20123013133) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91468132 + ... + 91468351.
It is an arithmetic number, because the mean of its divisors is an integer number (2469642534).
Almost surely, 220123013130 is an apocalyptic number.
20123013130 is a deficient number, since it is larger than the sum of its proper divisors (19391267414).
20123013130 is a wasteful number, since it uses less digits than its factorization.
20123013130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 182936501.
The product of its (nonzero) digits is 108, while the sum is 16.
Adding to 20123013130 its reverse (3131032102), we get a palindrome (23254045232).
The spelling of 20123013130 in words is "twenty billion, one hundred twenty-three million, thirteen thousand, one hundred thirty".
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