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20003213112 = 2331395996167
BaseRepresentation
bin10010101000010010…
…001100111100111000
31220122001120111210220
4102220102030330320
5311431310304422
613104522140040
71305461335401
oct225022147470
956561514726
1020003213112
118535324093
123a63051620
131b6a26129c
14d7a8c09a8
157c11a2e5c
hex4a848cf38

20003213112 has 32 divisors (see below), whose sum is σ = 50367811200. Its totient is φ = 6619767264.

The previous prime is 20003213089. The next prime is 20003213161. The reversal of 20003213112 is 21131230002.

It is a junction number, because it is equal to n+sod(n) for n = 20003213091 and 20003213100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2994748 + ... + 3001419.

It is an arithmetic number, because the mean of its divisors is an integer number (1573994100).

Almost surely, 220003213112 is an apocalyptic number.

It is an amenable number.

20003213112 is an abundant number, since it is smaller than the sum of its proper divisors (30364598088).

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

20003213112 is a wasteful number, since it uses less digits than its factorization.

20003213112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5996315 (or 5996311 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20003213112 its reverse (21131230002), we get a palindrome (41134443114).

The spelling of 20003213112 in words is "twenty billion, three million, two hundred thirteen thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 24 139 278 417 556 834 1112 1668 3336 5996167 11992334 17988501 23984668 35977002 47969336 71954004 143908008 833467213 1666934426 2500401639 3333868852 5000803278 6667737704 10001606556 20003213112