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12310342220 = 2251185765293
BaseRepresentation
bin10110111011100000…
…01110101001001100
31011202221002011211202
423131300032221030
5200202421422340
65353313205032
7614030116361
oct133560165114
934687064752
1012310342220
11524795a350
122476860778
131212543b87
1484ad24468
154c0b23c15
hex2ddc0ea4c

12310342220 has 48 divisors (see below), whose sum is σ = 28235215008. Its totient is φ = 4471196160.

The previous prime is 12310342201. The next prime is 12310342241. The reversal of 12310342220 is 2224301321.

12310342220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12310342192 and 12310342201.

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, 155894 + ... + 221186.

It is an arithmetic number, because the mean of its divisors is an integer number (588233646).

Almost surely, 212310342220 is an apocalyptic number.

12310342220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12310342220 is an abundant number, since it is smaller than the sum of its proper divisors (15924872788).

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

12310342220 is a wasteful number, since it uses less digits than its factorization.

12310342220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66170 (or 66168 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12310342220 its reverse (2224301321), we get a palindrome (14534643541).

The spelling of 12310342220 in words is "twelve billion, three hundred ten million, three hundred forty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 857 1714 3428 4285 8570 9427 17140 18854 37708 47135 65293 94270 130586 188540 261172 326465 652930 718223 1305860 1436446 2872892 3591115 7182230 14364460 55956101 111912202 223824404 279780505 559561010 615517111 1119122020 1231034222 2462068444 3077585555 6155171110 12310342220