319623449 has 2 divisors, whose sum is σ = 319623450. Its totient is φ = 319623448.

The previous prime is 319623431. The next prime is 319623461. The reversal of 319623449 is 944326913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233875849 + 85747600 = 15293^2 + 9260^2 .

It is a cyclic number.

It is not a de Polignac number, because 319623449 - 2¹⁶ = 319557913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (319623049) 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 as a sum of consecutive naturals, namely, 159811724 + 159811725.

It is an arithmetic number, because the mean of its divisors is an integer number (159811725).

Almost surely, 2^319623449 is an apocalyptic number.

It is an amenable number.

319623449 is a deficient number, since it is larger than the sum of its proper divisors (1).

319623449 is an equidigital number, since it uses as much as digits as its factorization.

319623449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 41.

The square root of 319623449 is about 17878.0158015368. The cubic root of 319623449 is about 683.7219845544.

The spelling of 319623449 in words is "three hundred nineteen million, six hundred twenty-three thousand, four hundred forty-nine".