306343313 has 4 divisors (see below), whose sum is σ = 314622900. Its totient is φ = 298063728.

The previous prime is 306343283. The next prime is 306343319. The reversal of 306343313 is 313343603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313343603 = 167 ⋅1876309.

It can be written as a sum of positive squares in 2 ways, for example, as 293505424 + 12837889 = 17132^2 + 3583^2 .

It is a cyclic number.

It is not a de Polignac number, because 306343313 - 2⁸ = 306343057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (306343319) 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, 4139738 + ... + 4139811.

It is an arithmetic number, because the mean of its divisors is an integer number (78655725).

Almost surely, 2^306343313 is an apocalyptic number.

It is an amenable number.

306343313 is a deficient number, since it is larger than the sum of its proper divisors (8279587).

306343313 is an equidigital number, since it uses as much as digits as its factorization.

306343313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8279586.

The product of its (nonzero) digits is 5832, while the sum is 26.

The square root of 306343313 is about 17502.6658826591. The cubic root of 306343313 is about 674.1183279822.

Adding to 306343313 its reverse (313343603), we get a palindrome (619686916).

The spelling of 306343313 in words is "three hundred six million, three hundred forty-three thousand, three hundred thirteen".