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243095241 = 381031747
BaseRepresentation
bin11100111110101…
…01011011001001
3121221102111222110
432133111123021
5444213021431
640042212533
76011163324
oct1637253311
9557374873
10243095241
11115248064
12694b4149
133b49594c
14243dd7bb
151651d346
hexe7d56c9

243095241 has 4 divisors (see below), whose sum is σ = 324126992. Its totient is φ = 162063492.

The previous prime is 243095239. The next prime is 243095263. The reversal of 243095241 is 142590342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 243095241 - 21 = 243095239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243095199 and 243095208.

It is not an unprimeable number, because it can be changed into a prime (243095341) 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 3 ways as a sum of consecutive naturals, for example, 40515871 + ... + 40515876.

It is an arithmetic number, because the mean of its divisors is an integer number (81031748).

Almost surely, 2243095241 is an apocalyptic number.

It is an amenable number.

243095241 is a deficient number, since it is larger than the sum of its proper divisors (81031751).

243095241 is an equidigital number, since it uses as much as digits as its factorization.

243095241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81031750.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 243095241 is about 15591.5118253491. The cubic root of 243095241 is about 624.1066627126.

The spelling of 243095241 in words is "two hundred forty-three million, ninety-five thousand, two hundred forty-one".

Divisors: 1 3 81031747 243095241