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20000230312 = 2317147060517
BaseRepresentation
bin10010101000000110…
…110100101110101000
31220121211221222011211
4102220012310232220
5311430024332222
613104334202504
71305424103236
oct225006645650
956554858154
1020000230312
118533677067
123a62053434
131b6975870a
14d7a345956
157c0cb4277
hex4a81b4ba8

20000230312 has 16 divisors (see below), whose sum is σ = 39706339860. Its totient is φ = 9411873024.

The previous prime is 20000230309. The next prime is 20000230333. The reversal of 20000230312 is 21303200002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19389448516 + 610781796 = 139246^2 + 24714^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20000230292 and 20000230301.

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, 73530123 + ... + 73530394.

Almost surely, 220000230312 is an apocalyptic number.

It is an amenable number.

20000230312 is a deficient number, since it is larger than the sum of its proper divisors (19706109548).

20000230312 is a wasteful number, since it uses less digits than its factorization.

20000230312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147060540 (or 147060536 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20000230312 its reverse (21303200002), we get a palindrome (41303430314).

The spelling of 20000230312 in words is "twenty billion, two hundred thirty thousand, three hundred twelve".

Divisors: 1 2 4 8 17 34 68 136 147060517 294121034 588242068 1176484136 2500028789 5000057578 10000115156 20000230312