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131329275 = 35271122741
BaseRepresentation
bin1111101001111…
…10110011111011
3100011010012220020
413310332303323
5232110014100
621010501523
73153165120
oct764766373
9304105806
10131329275
116814a6a0
1237b948a3
132129283c
1413628747
15b7e25a0
hex7d3ecfb

131329275 has 48 divisors (see below), whose sum is σ = 270720768. Its totient is φ = 54576000.

The previous prime is 131329271. The next prime is 131329277. The reversal of 131329275 is 572923131.

It is not a de Polignac number, because 131329275 - 22 = 131329271 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (131329271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5596 + ... + 17145.

It is an arithmetic number, because the mean of its divisors is an integer number (5640016).

Almost surely, 2131329275 is an apocalyptic number.

131329275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131329275 is an abundant number, since it is smaller than the sum of its proper divisors (139391493).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131329275 is a wasteful number, since it uses less digits than its factorization.

131329275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22772 (or 22767 counting only the distinct ones).

The product of its digits is 11340, while the sum is 33.

The square root of 131329275 is about 11459.8985597605. The cubic root of 131329275 is about 508.3004750477.

The spelling of 131329275 in words is "one hundred thirty-one million, three hundred twenty-nine thousand, two hundred seventy-five".

Divisors: 1 3 5 7 11 15 21 25 33 35 55 75 77 105 165 175 231 275 385 525 825 1155 1925 5775 22741 68223 113705 159187 250151 341115 477561 568525 750453 795935 1250755 1705575 1751057 2387805 3752265 3979675 5253171 6253775 8755285 11939025 18761325 26265855 43776425 131329275