305404313 has 4 divisors (see below), whose sum is σ = 305818320. Its totient is φ = 304990308.

The previous prime is 305404277. The next prime is 305404321. The reversal of 305404313 is 313404503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 305404313 - 2¹² = 305400217 is a prime.

It is a super-3 number, since 3×305404313³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305404013) 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, 205895 + ... + 207372.

It is an arithmetic number, because the mean of its divisors is an integer number (76454580).

Almost surely, 2^305404313 is an apocalyptic number.

It is an amenable number.

305404313 is a deficient number, since it is larger than the sum of its proper divisors (414007).

305404313 is an equidigital number, since it uses as much as digits as its factorization.

305404313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414006.

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

The square root of 305404313 is about 17475.8208104798. The cubic root of 305404313 is about 673.4288564661.

Adding to 305404313 its reverse (313404503), we get a palindrome (618808816).

The spelling of 305404313 in words is "three hundred five million, four hundred four thousand, three hundred thirteen".