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20000331212 = 2236217138059
BaseRepresentation
bin10010101000000111…
…001101010111001100
31220121212011002120212
4102220013031113030
5311430041044322
613104340301552
71305425003351
oct225007152714
956555132525
1020000331212
118533735954
123a620a18b8
131b69792614
14d7a370628
157c0cd40e2
hex4a81cd5cc

20000331212 has 12 divisors (see below), whose sum is σ = 35001799560. Its totient is φ = 9999817056.

The previous prime is 20000331179. The next prime is 20000331229. The reversal of 20000331212 is 21213300002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75839 + ... + 213897.

It is an arithmetic number, because the mean of its divisors is an integer number (2916816630).

Almost surely, 220000331212 is an apocalyptic number.

It is an amenable number.

20000331212 is a deficient number, since it is larger than the sum of its proper divisors (15001468348).

20000331212 is a wasteful number, since it uses less digits than its factorization.

20000331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174280 (or 174278 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20000331212 its reverse (21213300002), we get a palindrome (41213631214).

The spelling of 20000331212 in words is "twenty billion, three hundred thirty-one thousand, two hundred twelve".

Divisors: 1 2 4 36217 72434 138059 144868 276118 552236 5000082803 10000165606 20000331212