319489085 has 32 divisors (see below), whose sum is σ = 422496000. Its totient is φ = 230985216.

The previous prime is 319489063. The next prime is 319489087. The reversal of 319489085 is 580984913.

It is a cyclic number.

It is not a de Polignac number, because 319489085 - 2²⁰ = 318440509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319489087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244544 + ... + 245846.

It is an arithmetic number, because the mean of its divisors is an integer number (13203000).

Almost surely, 2^319489085 is an apocalyptic number.

It is an amenable number.

319489085 is a deficient number, since it is larger than the sum of its proper divisors (103006915).

319489085 is a wasteful number, since it uses less digits than its factorization.

319489085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 319489085 is about 17874.2576069609. The cubic root of 319489085 is about 683.6261629481.

The spelling of 319489085 in words is "three hundred nineteen million, four hundred eighty-nine thousand, eighty-five".