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12310231230 = 23351110738737
BaseRepresentation
bin10110111011011111…
…10011100010111110
31011202220212112121000
423131233303202332
5200202404344410
65353310551130
7614026144653
oct133557634276
934686775530
1012310231230
115247893a20
1224768084a6
1312125054bb
1484acd5c2a
154c0b00dc0
hex2ddbf38be

12310231230 has 128 divisors (see below), whose sum is σ = 36147202560. Its totient is φ = 2956331520.

The previous prime is 12310231163. The next prime is 12310231249. The reversal of 12310231230 is 3213201321.

12310231230 is a `hidden beast` number, since 12 + 310 + 2 + 312 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 298422 + ... + 337158.

It is an arithmetic number, because the mean of its divisors is an integer number (282400020).

Almost surely, 212310231230 is an apocalyptic number.

12310231230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12310231230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18073601280).

12310231230 is an abundant number, since it is smaller than the sum of its proper divisors (23836971330).

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

12310231230 is a wasteful number, since it uses less digits than its factorization.

12310231230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38871 (or 38865 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12310231230 its reverse (3213201321), we get a palindrome (15523432551).

The spelling of 12310231230 in words is "twelve billion, three hundred ten million, two hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 27 30 33 45 54 55 66 90 99 107 110 135 165 198 214 270 297 321 330 495 535 594 642 963 990 1070 1177 1485 1605 1926 2354 2889 2970 3210 3531 4815 5778 5885 7062 9630 10593 11770 14445 17655 21186 28890 31779 35310 38737 52965 63558 77474 105930 116211 158895 193685 232422 317790 348633 387370 426107 581055 697266 852214 1045899 1162110 1278321 1743165 2091798 2130535 2556642 3486330 3834963 4144859 4261070 5229495 6391605 7669926 8289718 10458990 11504889 12434577 12783210 19174815 20724295 23009778 24869154 37303731 38349630 41448590 45593449 57524445 62172885 74607462 91186898 111911193 115048890 124345770 136780347 186518655 223822386 227967245 273560694 373037310 410341041 455934490 559555965 683901735 820682082 1119111930 1231023123 1367803470 2051705205 2462046246 4103410410 6155115615 12310231230