304320415405 has 4 divisors (see below), whose sum is σ = 365184498492. Its totient is φ = 243456332320.

The previous prime is 304320415397. The next prime is 304320415423. The reversal of 304320415405 is 504514023403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120672169641 + 183648245764 = 347379^2 + 428542^2 .

It is not a de Polignac number, because 304320415405 - 2³ = 304320415397 is a prime.

It is a super-2 number, since 2×304320415405² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30432041536 + ... + 30432041545.

It is an arithmetic number, because the mean of its divisors is an integer number (91296124623).

Almost surely, 2^304320415405 is an apocalyptic number.

It is an amenable number.

304320415405 is a deficient number, since it is larger than the sum of its proper divisors (60864083087).

304320415405 is an equidigital number, since it uses as much as digits as its factorization.

304320415405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60864083086.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 304320415405 its reverse (504514023403), we get a palindrome (808834438808).

The spelling of 304320415405 in words is "three hundred four billion, three hundred twenty million, four hundred fifteen thousand, four hundred five".