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131695071 = 391148187
BaseRepresentation
bin1111101100110…
…00000111011111
3100011210210200020
413312120013133
5232203220241
621022403223
73156250434
oct766300737
9304723606
10131695071
116837a502
1238130513
13213901a1
14136c1b8b
15b865b66
hex7d981df

131695071 has 8 divisors (see below), whose sum is σ = 175789824. Its totient is φ = 87698520.

The previous prime is 131695049. The next prime is 131695117. The reversal of 131695071 is 170596131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131695071 - 26 = 131695007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131695001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21361 + ... + 26826.

It is an arithmetic number, because the mean of its divisors is an integer number (21973728).

Almost surely, 2131695071 is an apocalyptic number.

131695071 is a deficient number, since it is larger than the sum of its proper divisors (44094753).

131695071 is an equidigital number, since it uses as much as digits as its factorization.

131695071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49101.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 131695071 is about 11475.8472889805. The cubic root of 131695071 is about 508.7719665652.

The spelling of 131695071 in words is "one hundred thirty-one million, six hundred ninety-five thousand, seventy-one".

Divisors: 1 3 911 2733 48187 144561 43898357 131695071