305505313 has 8 divisors (see below), whose sum is σ = 324708800. Its totient is φ = 286614288.

The previous prime is 305505307. The next prime is 305505323. The reversal of 305505313 is 313505503.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 305505313 - 2⁵ = 305505281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305505323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76098 + ... + 80011.

It is an arithmetic number, because the mean of its divisors is an integer number (40588600).

Almost surely, 2^305505313 is an apocalyptic number.

It is an amenable number.

305505313 is a deficient number, since it is larger than the sum of its proper divisors (19203487).

305505313 is a wasteful number, since it uses less digits than its factorization.

305505313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156231.

The product of its (nonzero) digits is 3375, while the sum is 25.

The square root of 305505313 is about 17478.7102785074. The cubic root of 305505313 is about 673.5030846450.

The spelling of 305505313 in words is "three hundred five million, five hundred five thousand, three hundred thirteen".