319491 has 8 divisors (see below), whose sum is σ = 473360. Its totient is φ = 212976.

The previous prime is 319489. The next prime is 319499. The reversal of 319491 is 194913.

It is not a de Polignac number, because 319491 - 2¹ = 319489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 11833 = 319491 / (3 + 1 + 9 + 4 + 9 + 1).

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 319491.

It is not an unprimeable number, because it can be changed into a prime (319499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5890 + ... + 5943.

It is an arithmetic number, because the mean of its divisors is an integer number (59170).

2³¹⁹⁴⁹¹ is an apocalyptic number.

319491 is a deficient number, since it is larger than the sum of its proper divisors (153869).

319491 is a wasteful number, since it uses less digits than its factorization.

319491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11842 (or 11836 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 319491 is about 565.2353492131. The cubic root of 319491 is about 68.3627528818.

The spelling of 319491 in words is "three hundred nineteen thousand, four hundred ninety-one".