305431304 has 16 divisors (see below), whose sum is σ = 586652220. Its totient is φ = 148990720.

The previous prime is 305431271. The next prime is 305431309. The reversal of 305431304 is 403134503.

It can be written as a sum of positive squares in 2 ways, for example, as 234028804 + 71402500 = 15298^2 + 8450^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 305431304.

It is not an unprimeable number, because it can be changed into a prime (305431309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465269 + ... + 465924.

Almost surely, 2^305431304 is an apocalyptic number.

It is an amenable number.

305431304 is a deficient number, since it is larger than the sum of its proper divisors (281220916).

305431304 is a wasteful number, since it uses less digits than its factorization.

305431304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931240 (or 931236 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 305431304 is about 17476.5930318240. The cubic root of 305431304 is about 673.4486946304.

Adding to 305431304 its reverse (403134503), we get a palindrome (708565807).

The spelling of 305431304 in words is "three hundred five million, four hundred thirty-one thousand, three hundred four".