Base | Representation |
---|---|
bin | 111111011110111… |
… | …0011100100010111 |
3 | 12111110012212201000 |
4 | 1332331303210113 |
5 | 13330303144343 |
6 | 551212034343 |
7 | 103533550053 |
oct | 17675634427 |
9 | 5443185630 |
10 | 2130131223 |
11 | 9a3449130 |
12 | 4b54629b3 |
13 | 27c40a79c |
14 | 162c90c63 |
15 | c7019ed3 |
hex | 7ef73917 |
2130131223 has 64 divisors (see below), whose sum is σ = 3612672000. Its totient is φ = 1227869280.
The previous prime is 2130131209. The next prime is 2130131231. The reversal of 2130131223 is 3221310312.
It is not a de Polignac number, because 2130131223 - 210 = 2130130199 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 2130131196 and 2130131205.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2130131233) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1358586 + ... + 1360152.
It is an arithmetic number, because the mean of its divisors is an integer number (56448000).
Almost surely, 22130131223 is an apocalyptic number.
2130131223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.
2130131223 is a deficient number, since it is larger than the sum of its proper divisors (1482540777).
2130131223 is a wasteful number, since it uses less digits than its factorization.
2130131223 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1809 (or 1803 counting only the distinct ones).
The product of its (nonzero) digits is 216, while the sum is 18.
The square root of 2130131223 is about 46153.3446566985. The cubic root of 2130131223 is about 1286.6747728809.
Adding to 2130131223 its reverse (3221310312), we get a palindrome (5351441535).
Subtracting 2130131223 from its reverse (3221310312), we obtain a square (1091179089 = 330332).
The spelling of 2130131223 in words is "two billion, one hundred thirty million, one hundred thirty-one thousand, two hundred twenty-three".
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