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304135241 = 820937049
BaseRepresentation
bin10010001000001…
…011110001001001
3210012021200010012
4102020023301021
51110324311431
650102401305
710352051444
oct2210136111
9705250105
10304135241
11146749343
1285a30235
134b0180a7
142c56c65b
151ba7922b
hex1220bc49

304135241 has 4 divisors (see below), whose sum is σ = 304180500. Its totient is φ = 304089984.

The previous prime is 304135231. The next prime is 304135243. The reversal of 304135241 is 142531403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142531403 = 720361629.

It can be written as a sum of positive squares in 2 ways, for example, as 31753225 + 272382016 = 5635^2 + 16504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-304135241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304135243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10316 + ... + 26733.

It is an arithmetic number, because the mean of its divisors is an integer number (76045125).

Almost surely, 2304135241 is an apocalyptic number.

It is an amenable number.

304135241 is a deficient number, since it is larger than the sum of its proper divisors (45259).

304135241 is an equidigital number, since it uses as much as digits as its factorization.

304135241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45258.

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

The square root of 304135241 is about 17439.4736445800. The cubic root of 304135241 is about 672.4947764274.

Adding to 304135241 its reverse (142531403), we get a palindrome (446666644).

The spelling of 304135241 in words is "three hundred four million, one hundred thirty-five thousand, two hundred forty-one".

Divisors: 1 8209 37049 304135241