305540113 has 4 divisors (see below), whose sum is σ = 309725668. Its totient is φ = 301354560.

The previous prime is 305540111. The next prime is 305540129. The reversal of 305540113 is 311045503.

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: 311045503 = 29 ⋅10725707.

It can be written as a sum of positive squares in 2 ways, for example, as 146603664 + 158936449 = 12108^2 + 12607^2 .

It is a cyclic number.

It is not a de Polignac number, because 305540113 - 2¹ = 305540111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305540111) 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, 2092668 + ... + 2092813.

It is an arithmetic number, because the mean of its divisors is an integer number (77431417).

Almost surely, 2^305540113 is an apocalyptic number.

It is an amenable number.

305540113 is a deficient number, since it is larger than the sum of its proper divisors (4185555).

305540113 is an equidigital number, since it uses as much as digits as its factorization.

305540113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185554.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 305540113 is about 17479.7057469512. The cubic root of 305540113 is about 673.5286565052.

Adding to 305540113 its reverse (311045503), we get a palindrome (616585616).

The spelling of 305540113 in words is "three hundred five million, five hundred forty thousand, one hundred thirteen".