Base | Representation |
---|---|
bin | 111111100000100… |
… | …1111100010010011 |
3 | 12111111220122121221 |
4 | 1333001033202103 |
5 | 13331021012321 |
6 | 551243225511 |
7 | 103544321620 |
oct | 17701174223 |
9 | 5444818557 |
10 | 2131032211 |
11 | 9a3a04050 |
12 | 4b5818297 |
13 | 27c664909 |
14 | 163047347 |
15 | c7146e41 |
hex | 7f04f893 |
2131032211 has 16 divisors (see below), whose sum is σ = 2665555200. Its totient is φ = 1655117280.
The previous prime is 2131032209. The next prime is 2131032247. The reversal of 2131032211 is 1122301312.
It is a cyclic number.
It is not a de Polignac number, because 2131032211 - 21 = 2131032209 is a prime.
It is not an unprimeable number, because it can be changed into a prime (2131032251) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21436 + ... + 68713.
It is an arithmetic number, because the mean of its divisors is an integer number (166597200).
Almost surely, 22131032211 is an apocalyptic number.
2131032211 is a deficient number, since it is larger than the sum of its proper divisors (534522989).
2131032211 is a wasteful number, since it uses less digits than its factorization.
2131032211 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 90474.
The product of its (nonzero) digits is 72, while the sum is 16.
The square root of 2131032211 is about 46163.1044341691. The cubic root of 2131032211 is about 1286.8561568740.
Adding to 2131032211 its reverse (1122301312), we get a palindrome (3253333523).
The spelling of 2131032211 in words is "two billion, one hundred thirty-one million, thirty-two thousand, two hundred eleven".
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