306313 has 4 divisors (see below), whose sum is σ = 350080. Its totient is φ = 262548.

The previous prime is 306301. The next prime is 306329. The reversal of 306313 is 313603.

306313 is nontrivially palindromic in base 8.

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 a de Polignac number, because none of the positive numbers 2^k-306313 is a prime.

It is a Duffinian number.

306313 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (306913) 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, 21873 + ... + 21886.

It is an arithmetic number, because the mean of its divisors is an integer number (87520).

2³⁰⁶³¹³ is an apocalyptic number.

It is an amenable number.

306313 is a deficient number, since it is larger than the sum of its proper divisors (43767).

306313 is an equidigital number, since it uses as much as digits as its factorization.

306313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43766.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 306313 is about 553.4555086003. The cubic root of 306313 is about 67.4096092338.

Adding to 306313 its reverse (313603), we get a palindrome (619916).

The spelling of 306313 in words is "three hundred six thousand, three hundred thirteen".