308313 has 16 divisors (see below), whose sum is σ = 481600. Its totient is φ = 194400.

The previous prime is 308311. The next prime is 308317. The reversal of 308313 is 313803.

It is not a de Polignac number, because 308313 - 2¹ = 308311 is a prime.

It is a Duffinian number.

308313 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (308311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213 + ... + 813.

It is an arithmetic number, because the mean of its divisors is an integer number (30100).

2³⁰⁸³¹³ is an apocalyptic number.

It is an amenable number.

308313 is a deficient number, since it is larger than the sum of its proper divisors (173287).

308313 is a wasteful number, since it uses less digits than its factorization.

308313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 308313 is about 555.2593988399. The cubic root of 308313 is about 67.5560029058.

The spelling of 308313 in words is "three hundred eight thousand, three hundred thirteen".