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20123013130 = 2511182936483
BaseRepresentation
bin10010101111011011…
…001101000000001010
31220221101222222112121
4102233123031000022
5312202442410010
613124442001454
71311444534523
oct225733150012
956841888477
1020123013130
118596a09670
123a971a628a
131b8901817c
14d8c78784a
157cb9693da
hex4af6cd00a

20123013130 has 16 divisors (see below), whose sum is σ = 39514280544. Its totient is φ = 7317459280.

The previous prime is 20123013109. The next prime is 20123013133. The reversal of 20123013130 is 3131032102.

It is a super-4 number, since 4×201230131304 (a number of 42 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (20123013133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91468132 + ... + 91468351.

It is an arithmetic number, because the mean of its divisors is an integer number (2469642534).

Almost surely, 220123013130 is an apocalyptic number.

20123013130 is a deficient number, since it is larger than the sum of its proper divisors (19391267414).

20123013130 is a wasteful number, since it uses less digits than its factorization.

20123013130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182936501.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20123013130 its reverse (3131032102), we get a palindrome (23254045232).

The spelling of 20123013130 in words is "twenty billion, one hundred twenty-three million, thirteen thousand, one hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 182936483 365872966 914682415 1829364830 2012301313 4024602626 10061506565 20123013130