Base | Representation |
---|---|
bin | 111111011111000… |
… | …0111010110000111 |
3 | 12111110100222211022 |
4 | 1332332013112013 |
5 | 13330313242411 |
6 | 551213501355 |
7 | 103534335200 |
oct | 17676072607 |
9 | 5443328738 |
10 | 2130212231 |
11 | 9a34a3a84 |
12 | 4b54a185b |
13 | 27c438614 |
14 | 162cb25a7 |
15 | c7033edb |
hex | 7ef87587 |
2130212231 has 12 divisors (see below), whose sum is σ = 2484775008. Its totient is φ = 1820905632.
The previous prime is 2130212221. The next prime is 2130212239. The reversal of 2130212231 is 1322120312.
It is not a de Polignac number, because 2130212231 - 26 = 2130212167 is a prime.
It is a super-2 number, since 2×21302122312 = 9075608298203994722, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2130212239) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41246 + ... + 77211.
It is an arithmetic number, because the mean of its divisors is an integer number (207064584).
Almost surely, 22130212231 is an apocalyptic number.
2130212231 is a deficient number, since it is larger than the sum of its proper divisors (354562777).
2130212231 is a wasteful number, since it uses less digits than its factorization.
2130212231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 118838 (or 118831 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 17.
The square root of 2130212231 is about 46154.2222445574. Note that the first 4 decimals coincide. The cubic root of 2130212231 is about 1286.6910832421.
Adding to 2130212231 its reverse (1322120312), we get a palindrome (3452332543).
It can be divided in two parts, 21302 and 12231, that added together give a palindrome (33533).
The spelling of 2130212231 in words is "two billion, one hundred thirty million, two hundred twelve thousand, two hundred thirty-one".
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