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12352131 = 3211124769
BaseRepresentation
bin101111000111…
…101010000011
3212020112221100
4233013222003
511130232011
61120425443
7206664021
oct57075203
925215840
1012352131
116a77380
124178283
13273636c
1418d7711
15113ed56
hexbc7a83

12352131 has 12 divisors (see below), whose sum is σ = 19464120. Its totient is φ = 7486080.

The previous prime is 12352103. The next prime is 12352141. The reversal of 12352131 is 13125321.

It is not a de Polignac number, because 12352131 - 25 = 12352099 is a prime.

It is a super-2 number, since 2×123521312 = 305150280482322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12352141) 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 11 ways as a sum of consecutive naturals, for example, 62286 + ... + 62483.

It is an arithmetic number, because the mean of its divisors is an integer number (1622010).

Almost surely, 212352131 is an apocalyptic number.

12352131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12352131 is a deficient number, since it is larger than the sum of its proper divisors (7111989).

12352131 is a wasteful number, since it uses less digits than its factorization.

12352131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124786 (or 124783 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 12352131 is about 3514.5598586452. The cubic root of 12352131 is about 231.1606797972.

Adding to 12352131 its reverse (13125321), we get a palindrome (25477452).

The spelling of 12352131 in words is "twelve million, three hundred fifty-two thousand, one hundred thirty-one".

Divisors: 1 3 9 11 33 99 124769 374307 1122921 1372459 4117377 12352131