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2130131223 = 3311231991567
BaseRepresentation
bin111111011110111…
…0011100100010111
312111110012212201000
41332331303210113
513330303144343
6551212034343
7103533550053
oct17675634427
95443185630
102130131223
119a3449130
124b54629b3
1327c40a79c
14162c90c63
15c7019ed3
hex7ef73917

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".

Divisors: 1 3 9 11 23 27 33 69 99 199 207 253 297 597 621 759 1567 1791 2189 2277 4577 4701 5373 6567 6831 13731 14103 17237 19701 36041 41193 42309 50347 51711 59103 108123 123579 151041 155133 311833 324369 396451 453123 465399 935499 973107 1189353 1359369 2806497 3430163 3568059 7172159 8419491 10290489 10704177 21516477 30871467 64549431 78893749 92614401 193648293 236681247 710043741 2130131223