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131428175 = 5219327239
BaseRepresentation
bin1111101010101…
…10111101001111
3100011022020120012
413311112331033
5232121200200
621012543435
73154056344
oct765267517
9304266505
10131428175
1168207a2a
1238021b7b
13212c8868
14136527cb
15b811a35
hex7d56f4f

131428175 has 12 divisors (see below), whose sum is σ = 163821360. Its totient is φ = 104593920.

The previous prime is 131428163. The next prime is 131428211. The reversal of 131428175 is 571824131.

It is not a de Polignac number, because 131428175 - 24 = 131428159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8795 + ... + 18444.

It is an arithmetic number, because the mean of its divisors is an integer number (13651780).

Almost surely, 2131428175 is an apocalyptic number.

131428175 is a deficient number, since it is larger than the sum of its proper divisors (32393185).

131428175 is a wasteful number, since it uses less digits than its factorization.

131428175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27442 (or 27437 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 131428175 is about 11464.2127946057. The cubic root of 131428175 is about 508.4280381345.

The spelling of 131428175 in words is "one hundred thirty-one million, four hundred twenty-eight thousand, one hundred seventy-five".

Divisors: 1 5 25 193 965 4825 27239 136195 680975 5257127 26285635 131428175