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131341243 = 1119628427
BaseRepresentation
bin1111101010000…
…01101110111011
3100011010211022111
413311001232323
5232110404433
621011033151
73153245035
oct765015673
9304124274
10131341243
1168158690
1237b9b7b7
1321298117
141362cc55
15b7e5dcd
hex7d41bbb

131341243 has 8 divisors (see below), whose sum is σ = 150822720. Its totient is φ = 113116680.

The previous prime is 131341229. The next prime is 131341271. The reversal of 131341243 is 342143131.

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 131341243 - 25 = 131341211 is a prime.

It is a super-2 number, since 2×1313412432 = 34501044225570098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131341283) 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, 314005 + ... + 314422.

It is an arithmetic number, because the mean of its divisors is an integer number (18852840).

Almost surely, 2131341243 is an apocalyptic number.

131341243 is a deficient number, since it is larger than the sum of its proper divisors (19481477).

131341243 is a wasteful number, since it uses less digits than its factorization.

131341243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628457.

The product of its digits is 864, while the sum is 22.

The square root of 131341243 is about 11460.4207165357. The cubic root of 131341243 is about 508.3159150053.

Adding to 131341243 its reverse (342143131), we get a palindrome (473484374).

The spelling of 131341243 in words is "one hundred thirty-one million, three hundred forty-one thousand, two hundred forty-three".

Divisors: 1 11 19 209 628427 6912697 11940113 131341243