319321589 has 2 divisors, whose sum is σ = 319321590. Its totient is φ = 319321588.

The previous prime is 319321579. The next prime is 319321601. The reversal of 319321589 is 985123913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281400625 + 37920964 = 16775^2 + 6158^2 .

It is a cyclic number.

It is not a de Polignac number, because 319321589 - 2⁴ = 319321573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319321529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159660794 + 159660795.

It is an arithmetic number, because the mean of its divisors is an integer number (159660795).

Almost surely, 2^319321589 is an apocalyptic number.

It is an amenable number.

319321589 is a deficient number, since it is larger than the sum of its proper divisors (1).

319321589 is an equidigital number, since it uses as much as digits as its factorization.

319321589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 41.

The square root of 319321589 is about 17869.5715953125. The cubic root of 319321589 is about 683.5066756488.

The spelling of 319321589 in words is "three hundred nineteen million, three hundred twenty-one thousand, five hundred eighty-nine".