309068109 has 128 divisors (see below), whose sum is σ = 597196800. Its totient is φ = 153861120.

The previous prime is 309068107. The next prime is 309068131. The reversal of 309068109 is 901860903.

It is not a de Polignac number, because 309068109 - 2¹ = 309068107 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309068101) 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 127 ways as a sum of consecutive naturals, for example, 2888434 + ... + 2888540.

It is an arithmetic number, because the mean of its divisors is an integer number (4665600).

Almost surely, 2^309068109 is an apocalyptic number.

It is an amenable number.

309068109 is a deficient number, since it is larger than the sum of its proper divisors (288128691).

309068109 is a wasteful number, since it uses less digits than its factorization.

309068109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 309068109 is about 17580.3330173236. Note that the first 3 decimals coincide. The cubic root of 309068109 is about 676.1110984438. Note that the first 3 decimals are identical.

The spelling of 309068109 in words is "three hundred nine million, sixty-eight thousand, one hundred nine".