31221421920
31,221,421,920 is an even composite number composed of six prime numbers multiplied together.
31221421920 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 31221421920:
25 × 33 × 5 × 13 × 157 × 3541
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 13 × 157 × 3541)See below for interesting mathematical facts about the number 31221421920 from the Numbermatics database.
Names of 31221421920
- Cardinal: 31221421920 can be written as Thirty-one billion, two hundred twenty-one million, four hundred twenty-one thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 3.122142192 × 1010
Factors of 31221421920
Divisors of 31221421920
- Number of divisors d(n): 384
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 27 30 32 36 39 40 45 48 52 54 60 65 72 78 80 90 96 104 108 117 120 130 135 144 156 157 160 180 195 208 216 234 240 260 270 288 312 314 351 360 390 416 432 468 471 480 520 540 585 624 628 702 720 780 785 864 936 942 1040 1080 1170 1248 1256 1404 1413 1440 1560 1570 1755 1872 1884 2041 2080 2160 2340 2355 2512 2808 2826 3120 3140 3510 3541 3744 3768 4082 4239 4320 4680 4710 5024 5616 5652 6123 6240 6280 7020 7065 7082 7536 8164 8478 9360 9420 10205 10623 11232 11304 12246 12560 14040 14130 14164 15072 16328 16956 17705 18369 18720 18840 20410 21195 21246 22608 24492 25120 28080 28260 28328 30615 31869 32656 33912 35410 36738 37680 40820 42390 42492 45216 46033 48984 53115 55107 56160 56520 56656 61230 63738 65312 67824 70820 73476 75360 81640 84780 84984 91845 92066 95607 97968 106230 110214 113040 113312 122460 127476 135648 138099 141640 146952 159345 163280 169560 169968 183690 184132 191214 195936 212460 220428 226080 230165 244920 254952 275535 276198 283280 293904 318690 326560 339120 339936 367380 368264 382428 414297 424920 440856 460330 478035 489840 509904 551070 552396 555937 566560 587808 637380 678240 690495 734760 736528 764856 828594 849840 881712 920660 956070 979680 1019808 1102140 1104792 1111874 1242891 1274760 1380990 1469520 1473056 1529712 1657188 1667811 1699680 1763424 1841320 1912140 2071485 2204280 2209584 2223748 2485782 2549520 2761980 2779685 2939040 3059424 3314376 3335622 3682640 3824280 4142970 4408560 4419168 4447496 4971564 5003433 5099040 5523960 5559370 6214455 6628752 6671244 7227181 7365280 7648560 8285940 8339055 8817120 8894992 9943128 10006866 11047920 11118740 12428910 13257504 13342488 14454362 15010299 15297120 16571880 16678110 17789984 19886256 20013732 21681543 22095840 22237480 24857820 25017165 26684976 28908724 30020598 33143760 33356220 36135905 39772512 40027464 43363086 44474960 49715640 50034330 53369952 57817448 60041196 65044629 66287520 66712440 72271810 75051495 80054928 86726172 88949920 99431280 100068660 108407715 115634896 120082392 130089258 133424880 144543620 150102990 160109856 173452344 195133887 198862560 200137320 216815430 231269792 240164784 260178516 266849760 289087240 300205980 325223145 346904688 390267774 400274640 433630860 480329568 520357032 578174480 600411960 650446290 693809376 780535548 800549280 867261720 975669435 1040714064 1156348960 1200823920 1300892580 1561071096 1734523440 1951338870 2081428128 2401647840 2601785160 3122142192 3469046880 3902677740 5203570320 6244284384 7805355480 10407140640 15610710960 31221421920
- Sum of all divisors σ(n): 118463748480
- Sum of proper divisors (its aliquot sum) s(n): 87242326560
- 31221421920 is an abundant number, because the sum of its proper divisors (87242326560) is greater than itself. Its abundance is 56020904640
Bases of 31221421920
- Binary: 111010001001111000100010111011000002
- Hexadecimal: 0x744F11760
- Base-36: ECCFFC0
Squares and roots of 31221421920
- 31221421920 squared (312214219202) is 974777186706656486400
- 31221421920 cubed (312214219203) is 30433929824159137434399141888000
-
The
square root of 31221421920 is 176695.8457915749 -
The
cube root of 31221421920 is 3148.8421685777
Scales and comparisons
How big is 31221421920?- 31,221,421,920 seconds is equal to 992 years, 38 weeks, 5 days, 1 hour, 12 minutes.
-
To count from 1 to 31,221,421,920 would take you about one thousand, nine hundred eighty-five years!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 31221421920 cubic inches would be around 262.4 feet tall.
Recreational maths with 31221421920
- 31221421920 backwards is 02912412213
- 31221421920 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 31221421920's digits is 27
- More coming soon!
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