Base | Representation |
---|---|
bin | 10011000001110010… |
… | …000111100101010010 |
3 | 1221201212112211222220 |
4 | 103001302013211102 |
5 | 313320314311010 |
6 | 13215203241510 |
7 | 1322204502126 |
oct | 230162074522 |
9 | 57655484886 |
10 | 20431010130 |
11 | 8734855343 |
12 | 3b62379296 |
13 | 1c07a85c0b |
14 | dbb63d586 |
15 | 7e8a07970 |
hex | 4c1c87952 |
20431010130 has 64 divisors (see below), whose sum is σ = 49330753920. Its totient is φ = 5415446016.
The previous prime is 20431010107. The next prime is 20431010143. The reversal of 20431010130 is 3101013402.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3592269 + ... + 3597951.
It is an arithmetic number, because the mean of its divisors is an integer number (770793030).
Almost surely, 220431010130 is an apocalyptic number.
20431010130 is an abundant number, since it is smaller than the sum of its proper divisors (28899743790).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20431010130 is a wasteful number, since it uses less digits than its factorization.
20431010130 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6395.
The product of its (nonzero) digits is 72, while the sum is 15.
Adding to 20431010130 its reverse (3101013402), we get a palindrome (23532023532).
The spelling of 20431010130 in words is "twenty billion, four hundred thirty-one million, ten thousand, one hundred thirty".
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