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13281100105 = 5713239711307
BaseRepresentation
bin11000101111001110…
…11000000101001001
31021021120201210022111
430113213120011021
5204144430200410
610033512022321
7650055326320
oct142747300511
937246653274
1013281100105
1156a5920099
1226a79919a1
1313386b3020
148ddc1d0b7
1552ae7ab8a
hex3179d8149

13281100105 has 64 divisors (see below), whose sum is σ = 20504752128. Its totient is φ = 8026571520.

The previous prime is 13281100103. The next prime is 13281100109. The reversal of 13281100105 is 50100118231.

It is not a de Polignac number, because 13281100105 - 21 = 13281100103 is a prime.

It is a super-2 number, since 2×132811001052 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13281100103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10160862 + ... + 10162168.

It is an arithmetic number, because the mean of its divisors is an integer number (320386752).

Almost surely, 213281100105 is an apocalyptic number.

It is an amenable number.

13281100105 is a deficient number, since it is larger than the sum of its proper divisors (7223652023).

13281100105 is a wasteful number, since it uses less digits than its factorization.

13281100105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326.

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 13281100105 its reverse (50100118231), we get a palindrome (63381218336).

The spelling of 13281100105 in words is "thirteen billion, two hundred eighty-one million, one hundred thousand, one hundred five".

Divisors: 1 5 7 13 23 35 65 91 115 161 299 455 805 971 1307 1495 2093 4855 6535 6797 9149 10465 12623 16991 22333 30061 33985 45745 63115 84955 88361 111665 118937 150305 156331 210427 290329 390793 441805 594685 781655 1052135 1269097 1451645 1953965 2032303 2735551 6345485 8883679 10161515 13677755 16498261 29189231 44418395 82491305 115487827 145946155 204324617 379460003 577439135 1021623085 1897300015 2656220021 13281100105