Base | Representation |
---|---|
bin | 111111100001001… |
… | …0001001101010101 |
3 | 12111112102022121200 |
4 | 1333002101031111 |
5 | 13331103114310 |
6 | 551253103113 |
7 | 103546522065 |
oct | 17702211525 |
9 | 5445368550 |
10 | 2131301205 |
11 | 9a4078160 |
12 | 4b5927a99 |
13 | 27c72a197 |
14 | 1630b73a5 |
15 | c719b9c0 |
hex | 7f091355 |
2131301205 has 48 divisors (see below), whose sum is σ = 4169093760. Its totient is φ = 997718400.
The previous prime is 2131301177. The next prime is 2131301213. The reversal of 2131301205 is 5021031312.
It is not a de Polignac number, because 2131301205 - 216 = 2131235669 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59881 + ... + 88590.
It is an arithmetic number, because the mean of its divisors is an integer number (86856120).
Almost surely, 22131301205 is an apocalyptic number.
It is an amenable number.
2131301205 is a deficient number, since it is larger than the sum of its proper divisors (2037792555).
2131301205 is a wasteful number, since it uses less digits than its factorization.
2131301205 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 148522 (or 148519 counting only the distinct ones).
The product of its (nonzero) digits is 180, while the sum is 18.
The square root of 2131301205 is about 46166.0178594602. The cubic root of 2131301205 is about 1286.9102999663.
Adding to 2131301205 its reverse (5021031312), we get a palindrome (7152332517).
The spelling of 2131301205 in words is "two billion, one hundred thirty-one million, three hundred one thousand, two hundred five".
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