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131042341 = 1753145441
BaseRepresentation
bin1111100111110…
…00110000100101
3100010120122022001
413303320300211
5232021323331
621000405301
73150561433
oct763706045
9303518261
10131042341
1167a74061
1237a76831
13211c2061
1413591d53
15b787561
hex7cf8c25

131042341 has 8 divisors (see below), whose sum is σ = 141369624. Its totient is φ = 121006080.

The previous prime is 131042299. The next prime is 131042347. The reversal of 131042341 is 143240131.

It can be written as a sum of positive squares in 4 ways, for example, as 11249316 + 119793025 = 3354^2 + 10945^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 131042341 - 213 = 131034149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131042347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71820 + ... + 73621.

It is an arithmetic number, because the mean of its divisors is an integer number (17671203).

Almost surely, 2131042341 is an apocalyptic number.

It is an amenable number.

131042341 is a deficient number, since it is larger than the sum of its proper divisors (10327283).

131042341 is a wasteful number, since it uses less digits than its factorization.

131042341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145511.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 131042341 is about 11447.3726679968. The cubic root of 131042341 is about 507.9300193452.

Adding to 131042341 its reverse (143240131), we get a palindrome (274282472).

The spelling of 131042341 in words is "one hundred thirty-one million, forty-two thousand, three hundred forty-one".

Divisors: 1 17 53 901 145441 2472497 7708373 131042341