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13431141 = 327121019
BaseRepresentation
bin110011001111…
…000101100101
3221021101001200
4303033011211
511414244031
61155513113
7222106563
oct63170545
927241050
1013431141
117644019
1245b8799
132a23529
141ad8a33
1512a48e6
hexccf165

13431141 has 12 divisors (see below), whose sum is σ = 19674720. Its totient is φ = 8827560.

The previous prime is 13431137. The next prime is 13431161. The reversal of 13431141 is 14113431.

It is not a de Polignac number, because 13431141 - 22 = 13431137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431161) 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, 9871 + ... + 11148.

It is an arithmetic number, because the mean of its divisors is an integer number (1639560).

Almost surely, 213431141 is an apocalyptic number.

It is an amenable number.

13431141 is a deficient number, since it is larger than the sum of its proper divisors (6243579).

13431141 is a wasteful number, since it uses less digits than its factorization.

13431141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21096 (or 21093 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 13431141 is about 3664.8521116138. The cubic root of 13431141 is about 237.7046273382.

Adding to 13431141 its reverse (14113431), we get a palindrome (27544572).

The spelling of 13431141 in words is "thirteen million, four hundred thirty-one thousand, one hundred forty-one".

Divisors: 1 3 9 71 213 639 21019 63057 189171 1492349 4477047 13431141