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12310132020 = 22354319792411
BaseRepresentation
bin10110111011011110…
…11011010100110100
31011202220200111111120
423131233123110310
5200202343211040
65353304503540
7614025252504
oct133557332464
934686614446
1012310132020
11524782642a
12247677abb0
13121249c2b4
1484acaba04
154c0ad17d0
hex2ddbdb534

12310132020 has 96 divisors (see below), whose sum is σ = 35302417920. Its totient is φ = 3203410560.

The previous prime is 12310132001. The next prime is 12310132033. The reversal of 12310132020 is 2023101321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 5104615 + ... + 5107025.

It is an arithmetic number, because the mean of its divisors is an integer number (367733520).

Almost surely, 212310132020 is an apocalyptic number.

12310132020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12310132020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17651208960).

12310132020 is an abundant number, since it is smaller than the sum of its proper divisors (22992285900).

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

12310132020 is a wasteful number, since it uses less digits than its factorization.

12310132020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4445 (or 4443 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12310132020 its reverse (2023101321), we get a palindrome (14333233341).

The spelling of 12310132020 in words is "twelve billion, three hundred ten million, one hundred thirty-two thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 43 60 86 129 172 215 258 430 516 645 860 1290 1979 2411 2580 3958 4822 5937 7233 7916 9644 9895 11874 12055 14466 19790 23748 24110 28932 29685 36165 39580 48220 59370 72330 85097 103673 118740 144660 170194 207346 255291 311019 340388 414692 425485 510582 518365 622038 850970 1021164 1036730 1244076 1276455 1555095 1701940 2073460 2552910 3110190 4771369 5105820 6220380 9542738 14314107 19085476 23856845 28628214 47713690 57256428 71570535 95427380 143141070 205168867 286282140 410337734 615506601 820675468 1025844335 1231013202 2051688670 2462026404 3077533005 4103377340 6155066010 12310132020