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13171139 = 47713947
BaseRepresentation
bin110010001111…
…100111000011
3220210011101222
4302033213003
511332434024
61150145255
7216644552
oct62174703
926704358
1013171139
117486743
1244b222b
132962097
141a6bd99
15125285e
hexc8f9c3

13171139 has 8 divisors (see below), whose sum is σ = 13644288. Its totient is φ = 12706120.

The previous prime is 13171129. The next prime is 13171159. The reversal of 13171139 is 93117131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13171139 - 220 = 12122563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13171129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1364 + ... + 5310.

It is an arithmetic number, because the mean of its divisors is an integer number (1705536).

Almost surely, 213171139 is an apocalyptic number.

13171139 is a deficient number, since it is larger than the sum of its proper divisors (473149).

13171139 is an equidigital number, since it uses as much as digits as its factorization.

13171139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065.

The product of its digits is 567, while the sum is 26.

The square root of 13171139 is about 3629.2063870769. The cubic root of 13171139 is about 236.1607817049.

The spelling of 13171139 in words is "thirteen million, one hundred seventy-one thousand, one hundred thirty-nine".

Divisors: 1 47 71 3337 3947 185509 280237 13171139