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131241061 = 74471163
BaseRepresentation
bin1111101001010…
…01010001100101
3100010221201220001
413310221101211
5232044203221
621004541301
73152350000
oct764512145
9303851801
10131241061
116809a396
1237b51831
1321261643
1413604537
15b7c6391
hex7d29465

131241061 has 20 divisors (see below), whose sum is σ = 156497472. Its totient is φ = 110004216.

The previous prime is 131241053. The next prime is 131241107. The reversal of 131241061 is 160142131.

It is not a de Polignac number, because 131241061 - 23 = 131241053 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 (131241361) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 112266 + ... + 113428.

Almost surely, 2131241061 is an apocalyptic number.

It is an amenable number.

131241061 is a deficient number, since it is larger than the sum of its proper divisors (25256411).

131241061 is an frugal number, since it uses more digits than its factorization.

131241061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 131241061 is about 11456.0491008026. The cubic root of 131241061 is about 508.1866409175.

Adding to 131241061 its reverse (160142131), we get a palindrome (291383192).

The spelling of 131241061 in words is "one hundred thirty-one million, two hundred forty-one thousand, sixty-one".

Divisors: 1 7 47 49 329 343 1163 2303 2401 8141 16121 54661 56987 112847 382627 398909 2678389 2792363 18748723 131241061