305056133 has 16 divisors (see below), whose sum is σ = 321375600. Its totient is φ = 289175040.

The previous prime is 305056111. The next prime is 305056139. The reversal of 305056133 is 331650503.

It can be written as a sum of positive squares in 8 ways, for example, as 107288164 + 197767969 = 10358^2 + 14063^2 .

It is a cyclic number.

It is not a de Polignac number, because 305056133 - 2¹² = 305052037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305056139) 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 15 ways as a sum of consecutive naturals, for example, 466835 + ... + 467487.

It is an arithmetic number, because the mean of its divisors is an integer number (20085975).

Almost surely, 2^305056133 is an apocalyptic number.

It is an amenable number.

305056133 is a deficient number, since it is larger than the sum of its proper divisors (16319467).

305056133 is a wasteful number, since it uses less digits than its factorization.

305056133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952.

The product of its (nonzero) digits is 4050, while the sum is 26.

The square root of 305056133 is about 17465.8562057518. The cubic root of 305056133 is about 673.1728421588.

The spelling of 305056133 in words is "three hundred five million, fifty-six thousand, one hundred thirty-three".