304125313321 has 4 divisors (see below), whose sum is σ = 322015037652. Its totient is φ = 286235588992.

The previous prime is 304125313319. The next prime is 304125313333. The reversal of 304125313321 is 123313521403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123313521403 = 19 ⋅6490185337.

It can be written as a sum of positive squares in 2 ways, for example, as 193278933225 + 110846380096 = 439635^2 + 332936^2 .

It is a cyclic number.

It is not a de Polignac number, because 304125313321 - 2¹ = 304125313319 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 304125313321.

It is not an unprimeable number, because it can be changed into a prime (304125313361) 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, 8944862140 + ... + 8944862173.

It is an arithmetic number, because the mean of its divisors is an integer number (80503759413).

Almost surely, 2^304125313321 is an apocalyptic number.

It is an amenable number.

304125313321 is a deficient number, since it is larger than the sum of its proper divisors (17889724331).

304125313321 is a wasteful number, since it uses less digits than its factorization.

304125313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17889724330.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 304125313321 its reverse (123313521403), we get a palindrome (427438834724).

The spelling of 304125313321 in words is "three hundred four billion, one hundred twenty-five million, three hundred thirteen thousand, three hundred twenty-one".