319605049 has 4 divisors (see below), whose sum is σ = 338405364. Its totient is φ = 300804736.

The previous prime is 319605043. The next prime is 319605053. The reversal of 319605049 is 940506913.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 229734649 + 89870400 = 15157^2 + 9480^2 .

It is a cyclic number.

It is not a de Polignac number, because 319605049 - 2¹³ = 319596857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 319604999 and 319605017.

It is not an unprimeable number, because it can be changed into a prime (319605043) 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 in 3 ways as a sum of consecutive naturals, for example, 9400132 + ... + 9400165.

It is an arithmetic number, because the mean of its divisors is an integer number (84601341).

Almost surely, 2^319605049 is an apocalyptic number.

It is an amenable number.

319605049 is a deficient number, since it is larger than the sum of its proper divisors (18800315).

319605049 is a wasteful number, since it uses less digits than its factorization.

319605049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18800314.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 319605049 is about 17877.5011956369. The cubic root of 319605049 is about 683.7088641926.

The spelling of 319605049 in words is "three hundred nineteen million, six hundred five thousand, forty-nine".