304121345 has 16 divisors (see below), whose sum is σ = 398950272. Its totient is φ = 220719360.

The previous prime is 304121339. The next prime is 304121351. The reversal of 304121345 is 543121403.

It is an interprime number because it is at equal distance from previous prime (304121339) and next prime (304121351).

It is not a de Polignac number, because 304121345 - 2⁶ = 304121281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 304121345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22169 + ... + 33161.

It is an arithmetic number, because the mean of its divisors is an integer number (24934392).

Almost surely, 2^304121345 is an apocalyptic number.

It is an amenable number.

304121345 is a deficient number, since it is larger than the sum of its proper divisors (94828927).

304121345 is a wasteful number, since it uses less digits than its factorization.

304121345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11512.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 304121345 is about 17439.0752335094. The cubic root of 304121345 is about 672.4845341311.

Adding to 304121345 its reverse (543121403), we get a palindrome (847242748).

The spelling of 304121345 in words is "three hundred four million, one hundred twenty-one thousand, three hundred forty-five".