Base | Representation |
---|---|
bin | 10010110111101111… |
… | …00100110101000100 |
3 | 222011001200210212111 |
4 | 21123313210311010 |
5 | 131222043330040 |
6 | 4353151230404 |
7 | 506030014522 |
oct | 113367446504 |
9 | 28131623774 |
10 | 10131230020 |
11 | 43298a707a |
12 | 1b68b18404 |
13 | c55c46a82 |
14 | 6c1763312 |
15 | 3e4680dea |
hex | 25bde4d44 |
10131230020 has 12 divisors (see below), whose sum is σ = 21275583084. Its totient is φ = 4052492000.
The previous prime is 10131230009. The next prime is 10131230047. The reversal of 10131230020 is 2003213101.
It can be written as a sum of positive squares in 2 ways, for example, as 3642605316 + 6488624704 = 60354^2 + 80552^2 .
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253280731 + ... + 253280770.
It is an arithmetic number, because the mean of its divisors is an integer number (1772965257).
Almost surely, 210131230020 is an apocalyptic number.
10131230020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
10131230020 is an abundant number, since it is smaller than the sum of its proper divisors (11144353064).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
10131230020 is a wasteful number, since it uses less digits than its factorization.
10131230020 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 506561510 (or 506561508 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 13.
Adding to 10131230020 its reverse (2003213101), we get a palindrome (12134443121).
The spelling of 10131230020 in words is "ten billion, one hundred thirty-one million, two hundred thirty thousand, twenty".
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