309313268 has 36 divisors (see below), whose sum is σ = 596506596. Its totient is φ = 140236800.

The previous prime is 309313267. The next prime is 309313271. The reversal of 309313268 is 862313903.

It can be written as a sum of positive squares in 2 ways, for example, as 272976484 + 36336784 = 16522^2 + 6028^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309313267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 309746 + ... + 310742.

Almost surely, 2^309313268 is an apocalyptic number.

It is an amenable number.

309313268 is a deficient number, since it is larger than the sum of its proper divisors (287193328).

309313268 is a wasteful number, since it uses less digits than its factorization.

309313268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664 (or 1651 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 309313268 is about 17587.3041709069. The cubic root of 309313268 is about 676.2898194749.

It can be divided in two parts, 3093 and 13268, that added together give a palindrome (16361).

The spelling of 309313268 in words is "three hundred nine million, three hundred thirteen thousand, two hundred sixty-eight".