Base | Representation |
---|---|
bin | 111111100000110… |
… | …0000000101100001 |
3 | 12111112001002121200 |
4 | 1333001200011201 |
5 | 13331030200001 |
6 | 551244511413 |
7 | 103545023352 |
oct | 17701400541 |
9 | 5445032550 |
10 | 2131100001 |
11 | 9a3a4aa78 |
12 | 4b584b569 |
13 | 27c689724 |
14 | 163063d29 |
15 | c715c086 |
hex | 7f060161 |
2131100001 has 24 divisors (see below), whose sum is σ = 3133728000. Its totient is φ = 1395182112.
The previous prime is 2131099969. The next prime is 2131100057. The reversal of 2131100001 is 1000011312.
It is not a de Polignac number, because 2131100001 - 25 = 2131099969 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (2131100071) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 762715 + ... + 765503.
It is an arithmetic number, because the mean of its divisors is an integer number (130572000).
Almost surely, 22131100001 is an apocalyptic number.
It is an amenable number.
2131100001 is a deficient number, since it is larger than the sum of its proper divisors (1002627999).
2131100001 is a wasteful number, since it uses less digits than its factorization.
2131100001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4293 (or 4290 counting only the distinct ones).
The product of its (nonzero) digits is 6, while the sum is 9.
The square root of 2131100001 is about 46163.8386727101. The cubic root of 2131100001 is about 1286.8698020696.
Adding to 2131100001 its reverse (1000011312), we get a palindrome (3131111313).
The spelling of 2131100001 in words is "two billion, one hundred thirty-one million, one hundred thousand, one".
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