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20102310230 = 2571213713249
BaseRepresentation
bin10010101110001100…
…001110100101010110
31220212222001011111112
4102232030032211112
5312132142411410
613122422135022
71311103550312
oct225614164526
956788034445
1020102310230
118586259232
123a90281472
131b84949b32
14d89b18b42
157c9c2a105
hex4ae30e956

20102310230 has 32 divisors (see below), whose sum is σ = 36713736000. Its totient is φ = 7923363840.

The previous prime is 20102310191. The next prime is 20102310233. The reversal of 20102310230 is 3201320102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102310233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1510646 + ... + 1523894.

It is an arithmetic number, because the mean of its divisors is an integer number (1147304250).

Almost surely, 220102310230 is an apocalyptic number.

20102310230 is a deficient number, since it is larger than the sum of its proper divisors (16611425770).

20102310230 is a wasteful number, since it uses less digits than its factorization.

20102310230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15464.

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

Adding to 20102310230 its reverse (3201320102), we get a palindrome (23303630332).

The spelling of 20102310230 in words is "twenty billion, one hundred two million, three hundred ten thousand, two hundred thirty".

Divisors: 1 2 5 10 71 142 355 710 2137 4274 10685 13249 21370 26498 66245 132490 151727 303454 758635 940679 1517270 1881358 4703395 9406790 28313113 56626226 141565565 283131130 2010231023 4020462046 10051155115 20102310230