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231108419696990 = 251183194935713637
BaseRepresentation
bin110100100011000100011111…
…010000101011100101011110
31010022021202020010112111201112
4310203010133100223211132
5220242440020420300430
62135305424201342022
766452014041001103
oct6443043720534536
91108252203474645
10231108419696990
1167702591a31360
1221b0643a197912
139bc5579966304
14410d9c8792aaa
151bab9d8ab9195
hexd2311f42b95e

231108419696990 has 128 divisors (see below), whose sum is σ = 459771231628800. Its totient is φ = 82938253708800.

The previous prime is 231108419696969. The next prime is 231108419697013. The reversal of 231108419696990 is 99696914801132.

231108419696990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2311084196969902 (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231108419696990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 63543693452 + ... + 63543697088.

It is an arithmetic number, because the mean of its divisors is an integer number (3591962747100).

Almost surely, 2231108419696990 is an apocalyptic number.

231108419696990 is a deficient number, since it is larger than the sum of its proper divisors (228662811931810).

231108419696990 is a wasteful number, since it uses less digits than its factorization.

231108419696990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9258.

The product of its (nonzero) digits is 45349632, while the sum is 68.

The spelling of 231108419696990 in words is "two hundred thirty-one trillion, one hundred eight billion, four hundred nineteen million, six hundred ninety-six thousand, nine hundred ninety".

Divisors: 1 2 5 10 11 22 55 83 110 166 415 830 913 1826 1949 3571 3637 3898 4565 7142 7274 9130 9745 17855 18185 19490 21439 35710 36370 39281 40007 42878 78562 80014 107195 161767 196405 200035 214390 296393 301871 323534 392810 400070 592786 603742 808835 1481965 1509355 1617670 1779437 2963930 3018710 3260323 3320581 3558874 6520646 6641162 6959879 7088513 8897185 12987727 13919758 14177026 16301615 16602905 17794370 25975454 32603230 33205810 34799395 35442565 64938635 69598790 70885130 76558669 77973643 129877270 142864997 153117338 155947286 285729994 382793345 389868215 577669957 588346579 714324985 765586690 779736430 1077981341 1155339914 1176693158 1428649970 2155962682 2888349785 2941732895 5389906705 5776699570 5883465790 6354369527 6471812369 10779813410 11857794751 12708739054 12943624738 23715589502 25313079923 31771847635 32359061845 50626159846 59288973755 63543695270 64718123690 118577947510 126565399615 253130799230 278443879153 556887758306 1392219395765 2100985633609 2784438791530 4201971267218 10504928168045 21009856336090 23110841969699 46221683939398 115554209848495 231108419696990