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231235241 = 1729469037
BaseRepresentation
bin11011100100001…
…01111010101001
3121010002222010012
431302011322221
5433144011431
634540101305
75505316136
oct1562057251
9533088105
10231235241
11109587506
1265534835
1338ba25b3
14229d358d
151547922b
hexdc85ea9

231235241 has 8 divisors (see below), whose sum is σ = 253280520. Its totient is φ = 210128128.

The previous prime is 231235229. The next prime is 231235259. The reversal of 231235241 is 142532132.

It can be written as a sum of positive squares in 4 ways, for example, as 64722025 + 166513216 = 8045^2 + 12904^2 .

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 231235241 - 214 = 231218857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231235271) 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, 234026 + ... + 235011.

It is an arithmetic number, because the mean of its divisors is an integer number (31660065).

Almost surely, 2231235241 is an apocalyptic number.

It is an amenable number.

231235241 is a deficient number, since it is larger than the sum of its proper divisors (22045279).

231235241 is a wasteful number, since it uses less digits than its factorization.

231235241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469083.

The product of its digits is 1440, while the sum is 23.

The square root of 231235241 is about 15206.4210450717. The cubic root of 231235241 is about 613.7874546824.

Adding to 231235241 its reverse (142532132), we get a palindrome (373767373).

The spelling of 231235241 in words is "two hundred thirty-one million, two hundred thirty-five thousand, two hundred forty-one".

Divisors: 1 17 29 493 469037 7973629 13602073 231235241