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20010231103330 = 25131926330803453
BaseRepresentation
bin1001000110010111111101…
…01101110111111101100010
32121211221220102002101221201
410203023332231313331202
510110321423130301310
6110320323454111414
74133456115663316
oct443137655677542
977757812071851
1020010231103330
116415322879436
1222b2149aab56a
13b21c58b28730
144d2700d7bb46
1524a7a3193e3a
hex1232feb77f62

20010231103330 has 64 divisors (see below), whose sum is σ = 40985843754240. Its totient is φ = 6972915822336.

The previous prime is 20010231103319. The next prime is 20010231103363. The reversal of 20010231103330 is 3330113201002.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 20010231103298 and 20010231103307.

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, 14752117 + ... + 16051336.

It is an arithmetic number, because the mean of its divisors is an integer number (640403808660).

Almost surely, 220010231103330 is an apocalyptic number.

20010231103330 is an abundant number, since it is smaller than the sum of its proper divisors (20975612650910).

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

20010231103330 is a wasteful number, since it uses less digits than its factorization.

20010231103330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30803755.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20010231103330 its reverse (3330113201002), we get a palindrome (23340344304332).

The spelling of 20010231103330 in words is "twenty trillion, ten billion, two hundred thirty-one million, one hundred three thousand, three hundred thirty".

Divisors: 1 2 5 10 13 19 26 38 65 95 130 190 247 263 494 526 1235 1315 2470 2630 3419 4997 6838 9994 17095 24985 34190 49970 64961 129922 324805 649610 30803453 61606906 154017265 308034530 400444889 585265607 800889778 1170531214 2002224445 2926328035 4004448890 5852656070 7608452891 8101308139 15216905782 16202616278 38042264455 40506540695 76084528910 81013081390 105317005807 153924854641 210634011614 307849709282 526585029035 769624273205 1053170058070 1539248546410 2001023110333 4002046220666 10005115551665 20010231103330