306240241 has 4 divisors (see below), whose sum is σ = 307827172. Its totient is φ = 304653312.

The previous prime is 306240173. The next prime is 306240269. The reversal of 306240241 is 142042603.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142042603 = 5623 ⋅25261.

It can be written as a sum of positive squares in 2 ways, for example, as 179024400 + 127215841 = 13380^2 + 11279^2 .

It is a cyclic number.

It is not a de Polignac number, because 306240241 - 2⁹ = 306239729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (306241241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793176 + ... + 793561.

It is an arithmetic number, because the mean of its divisors is an integer number (76956793).

Almost surely, 2^306240241 is an apocalyptic number.

It is an amenable number.

306240241 is a deficient number, since it is larger than the sum of its proper divisors (1586931).

306240241 is a wasteful number, since it uses less digits than its factorization.

306240241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586930.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 306240241 is about 17499.7211692072. The cubic root of 306240241 is about 674.0427150826.

Adding to 306240241 its reverse (142042603), we get a palindrome (448282844).

The spelling of 306240241 in words is "three hundred six million, two hundred forty thousand, two hundred forty-one".