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12711141 = 33470783
BaseRepresentation
bin110000011111…
…010011100101
3212220210102000
4300133103211
511223224031
61132235513
7213020502
oct60372345
925823360
1012711141
1171a2083
12430bb99
1328308b1
14198c4a9
1511b13e6
hexc1f4e5

12711141 has 8 divisors (see below), whose sum is σ = 18831360. Its totient is φ = 8474076.

The previous prime is 12711131. The next prime is 12711143. The reversal of 12711141 is 14111721.

It is not a de Polignac number, because 12711141 - 25 = 12711109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12711143) 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, 235365 + ... + 235418.

It is an arithmetic number, because the mean of its divisors is an integer number (2353920).

Almost surely, 212711141 is an apocalyptic number.

It is an amenable number.

12711141 is a deficient number, since it is larger than the sum of its proper divisors (6120219).

12711141 is an equidigital number, since it uses as much as digits as its factorization.

12711141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470792 (or 470786 counting only the distinct ones).

The product of its digits is 56, while the sum is 18.

The square root of 12711141 is about 3565.2687135755. The cubic root of 12711141 is about 233.3788589174.

Adding to 12711141 its reverse (14111721), we get a palindrome (26822862).

The spelling of 12711141 in words is "twelve million, seven hundred eleven thousand, one hundred forty-one".

Divisors: 1 3 9 27 470783 1412349 4237047 12711141