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310131213113120 = 2557282529479317
BaseRepresentation
bin100011010000100000000110…
…0110010101001011100100000
31111200002020212110210121122212
41012201000030302221130200
5311122142211024104440
63015332151253421252
7122216145400163600
oct10641001462513440
91450066773717585
10310131213113120
118a8a99aa7754a3
122a94960b93a828
131040832b86ab79
1456826061b4c00
1525cc357d91465
hex11a100cca9720

310131213113120 has 144 divisors (see below), whose sum is σ = 852319135878840. Its totient is φ = 106329191399424.

The previous prime is 310131213113119. The next prime is 310131213113129. The reversal of 310131213113120 is 21311312131013.

It can be written as a sum of positive squares in 4 ways, for example, as 218344006555024 + 91787206558096 = 14776468^2 + 9580564^2 .

It is a super-2 number, since 2×3101312131131202 (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (310131213113129) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 646787702 + ... + 647267018.

Almost surely, 2310131213113120 is an apocalyptic number.

It is an amenable number.

310131213113120 is an abundant number, since it is smaller than the sum of its proper divisors (542187922765720).

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

310131213113120 is a wasteful number, since it uses less digits than its factorization.

310131213113120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561875 (or 561860 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 310131213113120 its reverse (21311312131013), we get a palindrome (331442525244133).

The spelling of 310131213113120 in words is "three hundred ten trillion, one hundred thirty-one billion, two hundred thirteen million, one hundred thirteen thousand, one hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 70 80 98 112 140 160 196 224 245 280 392 490 560 784 980 1120 1568 1960 3920 7840 82529 165058 330116 412645 479317 577703 660232 825290 958634 1155406 1320464 1650580 1917268 2310812 2396585 2640928 2888515 3301160 3355219 3834536 4043921 4621624 4793170 5777030 6602320 6710438 7669072 8087842 9243248 9586340 11554060 13204640 13420876 15338144 16175684 16776095 18486496 19172680 20219605 23108120 23486533 26841752 32351368 33552190 38345360 40439210 46216240 46973066 53683504 64702736 67104380 76690720 80878420 92432480 93946132 107367008 117432665 129405472 134208760 161756840 187892264 234865330 268417520 323513680 375784528 469730660 536835040 647027360 751569056 939461320 1878922640 3757845280 39557552693 79115105386 158230210772 197787763465 276902868851 316460421544 395575526930 553805737702 632920843088 791151053860 1107611475404 1265841686176 1384514344255 1582302107720 1938320081957 2215222950808 2769028688510 3164604215440 3876640163914 4430445901616 5538057377020 6329208430880 7753280327828 8860891803232 9691600409785 11076114754040 15506560655656 19383200819570 22152229508080 31013121311312 38766401639140 44304459016160 62026242622624 77532803278280 155065606556560 310131213113120