304312320145 has 8 divisors (see below), whose sum is σ = 365875698600. Its totient is φ = 242982579840.

The previous prime is 304312320139. The next prime is 304312320163. The reversal of 304312320145 is 541023213403.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1816720129 + 302495600016 = 42623^2 + 549996^2 .

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

It is not a de Polignac number, because 304312320145 - 2⁷ = 304312320017 is a prime.

It is an unprimeable number.

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, 58406670 + ... + 58411879.

It is an arithmetic number, because the mean of its divisors is an integer number (45734462325).

Almost surely, 2^304312320145 is an apocalyptic number.

It is an amenable number.

304312320145 is a deficient number, since it is larger than the sum of its proper divisors (61563378455).

304312320145 is a wasteful number, since it uses less digits than its factorization.

304312320145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116819075.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 304312320145 its reverse (541023213403), we get a palindrome (845335533548).

The spelling of 304312320145 in words is "three hundred four billion, three hundred twelve million, three hundred twenty thousand, one hundred forty-five".