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131041143 = 32233171997
BaseRepresentation
bin1111100111110…
…00011101110111
3100010120120122200
413303320131313
5232021304033
621000355543
73150555102
oct763703567
9303516580
10131041143
1167a73172
1237a75bb3
13211c164c
1413591739
15b787013
hex7cf8777

131041143 has 24 divisors (see below), whose sum is σ = 198233568. Its totient is φ = 83257152.

The previous prime is 131041139. The next prime is 131041153. The reversal of 131041143 is 341140131.

It is not a de Polignac number, because 131041143 - 22 = 131041139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131041153) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 64621 + ... + 66617.

It is an arithmetic number, because the mean of its divisors is an integer number (8259732).

Almost surely, 2131041143 is an apocalyptic number.

131041143 is a deficient number, since it is larger than the sum of its proper divisors (67192425).

131041143 is a wasteful number, since it uses less digits than its factorization.

131041143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343 (or 2340 counting only the distinct ones).

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

The square root of 131041143 is about 11447.3203414598. The cubic root of 131041143 is about 507.9284714943.

Adding to 131041143 its reverse (341140131), we get a palindrome (472181274).

The spelling of 131041143 in words is "one hundred thirty-one million, forty-one thousand, one hundred forty-three".

Divisors: 1 3 9 23 69 207 317 951 1997 2853 5991 7291 17973 21873 45931 65619 137793 413379 633049 1899147 5697441 14560127 43680381 131041143