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20102300312 = 232512787539
BaseRepresentation
bin10010101110001100…
…001100001010011000
31220212222000122220012
4102232030030022120
5312132142102222
613122422021052
71311103506353
oct225614141230
956788018805
1020102300312
118586251836
123a90277788
131b84945473
14d89b1529a
157c9c271e2
hex4ae30c298

20102300312 has 8 divisors (see below), whose sum is σ = 37691813100. Its totient is φ = 10051150152.

The previous prime is 20102300297. The next prime is 20102300353. The reversal of 20102300312 is 21300320102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256393762 + ... + 1256393777.

Almost surely, 220102300312 is an apocalyptic number.

It is an amenable number.

20102300312 is a deficient number, since it is larger than the sum of its proper divisors (17589512788).

20102300312 is a wasteful number, since it uses less digits than its factorization.

20102300312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512787545 (or 2512787541 counting only the distinct ones).

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

Adding to 20102300312 its reverse (21300320102), we get a palindrome (41402620414).

The spelling of 20102300312 in words is "twenty billion, one hundred two million, three hundred thousand, three hundred twelve".

Divisors: 1 2 4 8 2512787539 5025575078 10051150156 20102300312