305133113 has 8 divisors (see below), whose sum is σ = 307817832. Its totient is φ = 302455296.

The previous prime is 305133107. The next prime is 305133131. The reversal of 305133113 is 311331503.

It can be written as a sum of positive squares in 4 ways, for example, as 3485689 + 301647424 = 1867^2 + 17368^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 305133113 - 2¹⁰ = 305132089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305133613) 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 7 ways as a sum of consecutive naturals, for example, 127181 + ... + 129557.

It is an arithmetic number, because the mean of its divisors is an integer number (38477229).

Almost surely, 2^305133113 is an apocalyptic number.

It is an amenable number.

305133113 is a deficient number, since it is larger than the sum of its proper divisors (2684719).

305133113 is a wasteful number, since it uses less digits than its factorization.

305133113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451.

The product of its (nonzero) digits is 405, while the sum is 20.

The square root of 305133113 is about 17468.0597949515. The cubic root of 305133113 is about 673.2294617789.

Adding to 305133113 its reverse (311331503), we get a palindrome (616464616).

The spelling of 305133113 in words is "three hundred five million, one hundred thirty-three thousand, one hundred thirteen".