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20313330210 = 2325232426661
BaseRepresentation
bin10010111010110001…
…001101001000100010
31221102200010002111100
4102322301031020202
5313100203031320
613155401055230
71316245313025
oct227261151042
957380102440
1020313330210
118684388708
123b2aa87516
131bb9592024
14da9b691bc
157dd50e790
hex4bac4d222

20313330210 has 72 divisors (see below), whose sum is σ = 55210916124. Its totient is φ = 5181359040.

The previous prime is 20313330197. The next prime is 20313330229. The reversal of 20313330210 is 1203331302.

20313330210 is a `hidden beast` number, since 2 + 0 + 313 + 330 + 21 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19600280001 + 713050209 = 140001^2 + 26703^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 165721 + ... + 260940.

Almost surely, 220313330210 is an apocalyptic number.

20313330210 is an abundant number, since it is smaller than the sum of its proper divisors (34897585914).

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

20313330210 is a wasteful number, since it uses less digits than its factorization.

20313330210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426720 (or 426694 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20313330210 its reverse (1203331302), we get a palindrome (21516661512).

The spelling of 20313330210 in words is "twenty billion, three hundred thirteen million, three hundred thirty thousand, two hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 23 30 45 46 69 90 115 138 207 230 345 414 529 690 1035 1058 1587 2070 2645 3174 4761 5290 7935 9522 15870 23805 47610 426661 853322 1279983 2133305 2559966 3839949 4266610 6399915 7679898 9813203 12799830 19199745 19626406 29439609 38399490 49066015 58879218 88318827 98132030 147198045 176637654 225703669 294396090 441594135 451407338 677111007 883188270 1128518345 1354222014 2031333021 2257036690 3385555035 4062666042 6771110070 10156665105 20313330210