309104923 has 2 divisors, whose sum is σ = 309104924. Its totient is φ = 309104922.

The previous prime is 309104903. The next prime is 309105007. The reversal of 309104923 is 329401903.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 309104923 - 2¹⁷ = 308973851 is a prime.

It is not a weakly prime, because it can be changed into another prime (309104903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154552461 + 154552462.

It is an arithmetic number, because the mean of its divisors is an integer number (154552462).

Almost surely, 2^309104923 is an apocalyptic number.

309104923 is a deficient number, since it is larger than the sum of its proper divisors (1).

309104923 is an equidigital number, since it uses as much as digits as its factorization.

309104923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 309104923 is about 17581.3800084066. The cubic root of 309104923 is about 676.1379418968.

The spelling of 309104923 in words is "three hundred nine million, one hundred four thousand, nine hundred twenty-three".