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131241143 = 1148724499
BaseRepresentation
bin1111101001010…
…01010010110111
3100010221202000002
413310221102313
5232044204033
621004541515
73152350145
oct764512267
9303852002
10131241143
116809a460
1237b5189b
13212616a7
1413604595
15b7c63e8
hex7d294b7

131241143 has 8 divisors (see below), whose sum is σ = 143472000. Its totient is φ = 119060280.

The previous prime is 131241127. The next prime is 131241179. The reversal of 131241143 is 341142131.

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 131241143 - 24 = 131241127 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 (131249143) 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, 6893 + ... + 17606.

It is an arithmetic number, because the mean of its divisors is an integer number (17934000).

Almost surely, 2131241143 is an apocalyptic number.

131241143 is a deficient number, since it is larger than the sum of its proper divisors (12230857).

131241143 is a wasteful number, since it uses less digits than its factorization.

131241143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24997.

The product of its digits is 288, while the sum is 20.

The square root of 131241143 is about 11456.0526796973. The cubic root of 131241143 is about 508.1867467566.

Adding to 131241143 its reverse (341142131), we get a palindrome (472383274).

The spelling of 131241143 in words is "one hundred thirty-one million, two hundred forty-one thousand, one hundred forty-three".

Divisors: 1 11 487 5357 24499 269489 11931013 131241143