309424337 has 2 divisors, whose sum is σ = 309424338. Its totient is φ = 309424336.

The previous prime is 309424279. The next prime is 309424343. The reversal of 309424337 is 733424903.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274366096 + 35058241 = 16564^2 + 5921^2 .

It is an emirp because it is prime and its reverse (733424903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 309424337 - 2⁶ = 309424273 is a prime.

It is a Chen prime.

It is equal to p_16735067 and since 309424337 and 16735067 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 309424297 and 309424306.

It is not a weakly prime, because it can be changed into another prime (302424337) 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, 154712168 + 154712169.

It is an arithmetic number, because the mean of its divisors is an integer number (154712169).

Almost surely, 2^309424337 is an apocalyptic number.

It is an amenable number.

309424337 is a deficient number, since it is larger than the sum of its proper divisors (1).

309424337 is an equidigital number, since it uses as much as digits as its factorization.

309424337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 309424337 is about 17590.4615345931. The cubic root of 309424337 is about 676.3707577477.

The spelling of 309424337 in words is "three hundred nine million, four hundred twenty-four thousand, three hundred thirty-seven".