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11321213131020 = 22351333641431449
BaseRepresentation
bin1010010010111110110011…
…1000110001100100001100
31111002022000210211102012210
42210233230320301210030
52440441321030143040
640024520555430420
72245634133561012
oct244575470614414
944068023742183
1011321213131020
11367533273a551
12132a163455410
1364178006b7a0
142b1d41b4a8b2
15149756365480
hexa4bece3190c

11321213131020 has 96 divisors (see below), whose sum is σ = 34138905796800. Its totient is φ = 2786670858240.

The previous prime is 11321213131003. The next prime is 11321213131031. The reversal of 11321213131020 is 2013131212311.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26024256 + ... + 26455704.

It is an arithmetic number, because the mean of its divisors is an integer number (355613602050).

Almost surely, 211321213131020 is an apocalyptic number.

11321213131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11321213131020 is an abundant number, since it is smaller than the sum of its proper divisors (22817692665780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11321213131020 is a wasteful number, since it uses less digits than its factorization.

11321213131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465115 (or 465113 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 11321213131020 its reverse (2013131212311), we get a palindrome (13334344343331).

The spelling of 11321213131020 in words is "eleven trillion, three hundred twenty-one billion, two hundred thirteen million, one hundred thirty-one thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 195 260 390 780 33641 67282 100923 134564 168205 201846 336410 403692 431449 437333 504615 672820 862898 874666 1009230 1294347 1311999 1725796 1749332 2018460 2157245 2186665 2588694 2623998 4314490 4373330 5177388 5247996 5608837 6471735 6559995 8628980 8746660 11217674 12943470 13119990 16826511 22435348 25886940 26239980 28044185 33653022 56088370 67306044 84132555 112176740 168265110 336530220 14514375809 29028751618 43543127427 58057503236 72571879045 87086254854 145143758090 174172509708 188686885517 217715637135 290287516180 377373771034 435431274270 566060656551 754747542068 870862548540 943434427585 1132121313102 1886868855170 2264242626204 2830303282755 3773737710340 5660606565510 11321213131020