Base | Representation |
---|---|
bin | 111111100000100… |
… | …1111010010101010 |
3 | 12111111220121020212 |
4 | 1333001033102222 |
5 | 13331020444320 |
6 | 551243221122 |
7 | 103544315660 |
oct | 17701172252 |
9 | 5444817225 |
10 | 2131031210 |
11 | 9a3a03320 |
12 | 4b58177a2 |
13 | 27c664319 |
14 | 163046c30 |
15 | c71469c5 |
hex | 7f04f4aa |
2131031210 has 32 divisors (see below), whose sum is σ = 4782367872. Its totient is φ = 664217280.
The previous prime is 2131031197. The next prime is 2131031237. The reversal of 2131031210 is 121301312.
It is a Harshad number since it is a multiple of its sum of digits (14).
It is an unprimeable number.
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, 1383017 + ... + 1384556.
It is an arithmetic number, because the mean of its divisors is an integer number (149448996).
Almost surely, 22131031210 is an apocalyptic number.
2131031210 is an abundant number, since it is smaller than the sum of its proper divisors (2651336662).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2131031210 is a wasteful number, since it uses less digits than its factorization.
2131031210 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2767598.
The product of its (nonzero) digits is 36, while the sum is 14.
The square root of 2131031210 is about 46163.0935921760. The cubic root of 2131031210 is about 1286.8559553843.
Adding to 2131031210 its reverse (121301312), we get a palindrome (2252332522).
The spelling of 2131031210 in words is "two billion, one hundred thirty-one million, thirty-one thousand, two hundred ten".
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