Base | Representation |
---|---|
bin | 111111011111101… |
… | …0101010100000011 |
3 | 12111110222012220022 |
4 | 1332333111110003 |
5 | 13330404002322 |
6 | 551224404055 |
7 | 103540135232 |
oct | 17677252403 |
9 | 5443865808 |
10 | 2130531587 |
11 | 9a36a1a08 |
12 | 4b561662b |
13 | 27c51aaa2 |
14 | 162d56b19 |
15 | c7098942 |
hex | 7efd5503 |
2130531587 has 2 divisors, whose sum is σ = 2130531588. Its totient is φ = 2130531586.
The previous prime is 2130531583. The next prime is 2130531589. The reversal of 2130531587 is 7851350312.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 2130531587 - 22 = 2130531583 is a prime.
Together with 2130531589, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (2130531581) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065265793 + 1065265794.
It is an arithmetic number, because the mean of its divisors is an integer number (1065265794).
Almost surely, 22130531587 is an apocalyptic number.
2130531587 is a deficient number, since it is larger than the sum of its proper divisors (1).
2130531587 is an equidigital number, since it uses as much as digits as its factorization.
2130531587 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 25200, while the sum is 35.
The square root of 2130531587 is about 46157.6817767097. The cubic root of 2130531587 is about 1286.7553791808.
Adding to 2130531587 its reverse (7851350312), we get a palindrome (9981881899).
The spelling of 2130531587 in words is "two billion, one hundred thirty million, five hundred thirty-one thousand, five hundred eighty-seven".
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