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20110030312 = 23192315793643
BaseRepresentation
bin10010101110101001…
…101011010111101000
31220220111120101110111
4102232221223113220
5312141131432222
613123255424104
71311226302661
oct225651532750
956814511414
1020110030312
11858a651469
123a92985034
131b86420a28
14d8ab68368
157ca752777
hex4aea6b5e8

20110030312 has 64 divisors (see below), whose sum is σ = 41454144000. Its totient is φ = 9103368384.

The previous prime is 20110030307. The next prime is 20110030327. The reversal of 20110030312 is 21303001102.

It is a junction number, because it is equal to n+sod(n) for n = 20110030292 and 20110030301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5518363 + ... + 5522005.

It is an arithmetic number, because the mean of its divisors is an integer number (647721000).

Almost surely, 220110030312 is an apocalyptic number.

It is an amenable number.

20110030312 is an abundant number, since it is smaller than the sum of its proper divisors (21344113688).

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

20110030312 is a wasteful number, since it uses less digits than its factorization.

20110030312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5270 (or 5266 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20110030312 its reverse (21303001102), we get a palindrome (41413031414).

The spelling of 20110030312 in words is "twenty billion, one hundred ten million, thirty thousand, three hundred twelve".

Divisors: 1 2 4 8 19 23 38 46 76 92 152 184 437 874 1579 1748 3158 3496 3643 6316 7286 12632 14572 29144 30001 36317 60002 69217 72634 83789 120004 138434 145268 167578 240008 276868 290536 335156 553736 670312 690023 1380046 1591991 2760092 3183982 5520184 5752297 6367964 11504594 12735928 23009188 46018376 109293643 132302831 218587286 264605662 437174572 529211324 874349144 1058422648 2513753789 5027507578 10055015156 20110030312