319806349 has 2 divisors, whose sum is σ = 319806350. Its totient is φ = 319806348.

The previous prime is 319806259. The next prime is 319806353. The reversal of 319806349 is 943608913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228221449 + 91584900 = 15107^2 + 9570^2 .

It is a cyclic number.

It is not a de Polignac number, because 319806349 - 2¹¹ = 319804301 is a prime.

It is a super-2 number, since 2×319806349² = 204552201721419602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319803349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159903174 + 159903175.

It is an arithmetic number, because the mean of its divisors is an integer number (159903175).

Almost surely, 2^319806349 is an apocalyptic number.

It is an amenable number.

319806349 is a deficient number, since it is larger than the sum of its proper divisors (1).

319806349 is an equidigital number, since it uses as much as digits as its factorization.

319806349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 319806349 is about 17883.1302908635. The cubic root of 319806349 is about 683.8523764325.

The spelling of 319806349 in words is "three hundred nineteen million, eight hundred six thousand, three hundred forty-nine".