305111304 has 48 divisors (see below), whose sum is σ = 834544620. Its totient is φ = 100694400.

The previous prime is 305111251. The next prime is 305111309. The reversal of 305111304 is 403111503.

It can be written as a sum of positive squares in 2 ways, for example, as 275626404 + 29484900 = 16602^2 + 5430^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (305111309) 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 11 ways as a sum of consecutive naturals, for example, 13707 + ... + 28250.

Almost surely, 2^305111304 is an apocalyptic number.

It is an amenable number.

305111304 is an abundant number, since it is smaller than the sum of its proper divisors (529433316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305111304 is a wasteful number, since it uses less digits than its factorization.

305111304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42070 (or 42063 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 305111304 is about 17467.4355301515. The cubic root of 305111304 is about 673.2134219911.

Adding to 305111304 its reverse (403111503), we get a palindrome (708222807).

The spelling of 305111304 in words is "three hundred five million, one hundred eleven thousand, three hundred four".