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231105041 = 409565049
BaseRepresentation
bin11011100011001…
…10001000010001
3121002212100111222
431301212020101
5433130330131
634533214425
75504234426
oct1561461021
9532770458
10231105041
111094a8702
1265491415
1338b5825b
142299bd4d
151545087b
hexdc66211

231105041 has 4 divisors (see below), whose sum is σ = 231670500. Its totient is φ = 230539584.

The previous prime is 231105029. The next prime is 231105059. The reversal of 231105041 is 140501132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 185068816 + 46036225 = 13604^2 + 6785^2 .

It is a cyclic number.

It is not a de Polignac number, because 231105041 - 214 = 231088657 is a prime.

It is a super-2 number, since 2×2311050412 = 106819079951223362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (231105841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282116 + ... + 282933.

It is an arithmetic number, because the mean of its divisors is an integer number (57917625).

Almost surely, 2231105041 is an apocalyptic number.

It is an amenable number.

231105041 is a deficient number, since it is larger than the sum of its proper divisors (565459).

231105041 is an equidigital number, since it uses as much as digits as its factorization.

231105041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565458.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 231105041 is about 15202.1393560249. The cubic root of 231105041 is about 613.6722327263.

Adding to 231105041 its reverse (140501132), we get a palindrome (371606173).

The spelling of 231105041 in words is "two hundred thirty-one million, one hundred five thousand, forty-one".

Divisors: 1 409 565049 231105041