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20102131130 = 254216836991
BaseRepresentation
bin10010101110001011…
…100010110110111010
31220212221201001211012
4102232023202312322
5312132121144010
613122414233522
71311102203204
oct225613426672
956787631735
1020102131130
118586146714
123a901b58a2
131b848b6463
14d89aad774
157c9be2005
hex4ae2e2dba

20102131130 has 32 divisors (see below), whose sum is σ = 36328082688. Its totient is φ = 8008862400.

The previous prime is 20102131111. The next prime is 20102131183. The reversal of 20102131130 is 3113120102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2871935 + ... + 2878925.

It is an arithmetic number, because the mean of its divisors is an integer number (1135252584).

Almost surely, 220102131130 is an apocalyptic number.

20102131130 is a deficient number, since it is larger than the sum of its proper divisors (16225951558).

20102131130 is a wasteful number, since it uses less digits than its factorization.

20102131130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8102.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20102131130 its reverse (3113120102), we get a palindrome (23215251232).

The spelling of 20102131130 in words is "twenty billion, one hundred two million, one hundred thirty-one thousand, one hundred thirty".

Divisors: 1 2 5 10 421 683 842 1366 2105 3415 4210 6830 6991 13982 34955 69910 287543 575086 1437715 2875430 2943211 4774853 5886422 9549706 14716055 23874265 29432110 47748530 2010213113 4020426226 10051065565 20102131130