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131544201 = 3195474219
BaseRepresentation
bin1111101011100…
…11010010001001
3100011112010201110
413311303102021
5232133403301
621015240533
73155051535
oct765632211
9304463643
10131544201
1168287118
1238079149
1321339609
1413682bc5
15b8360d6
hex7d73489

131544201 has 16 divisors (see below), whose sum is σ = 185004800. Its totient is φ = 82909008.

The previous prime is 131544173. The next prime is 131544223. The reversal of 131544201 is 102445131.

It is not a de Polignac number, because 131544201 - 25 = 131544169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131544271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29070 + ... + 33288.

It is an arithmetic number, because the mean of its divisors is an integer number (11562800).

Almost surely, 2131544201 is an apocalyptic number.

It is an amenable number.

131544201 is a deficient number, since it is larger than the sum of its proper divisors (53460599).

131544201 is a wasteful number, since it uses less digits than its factorization.

131544201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4788.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 131544201 is about 11469.2720344405. The cubic root of 131544201 is about 508.5776091095.

Adding to 131544201 its reverse (102445131), we get a palindrome (233989332).

The spelling of 131544201 in words is "one hundred thirty-one million, five hundred forty-four thousand, two hundred one".

Divisors: 1 3 19 57 547 1641 4219 10393 12657 31179 80161 240483 2307793 6923379 43848067 131544201