319643 has 8 divisors (see below), whose sum is σ = 336528. Its totient is φ = 303264.

The previous prime is 319639. The next prime is 319673. The reversal of 319643 is 346913.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 319643 - 2² = 319639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319673) 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, 1880 + ... + 2042.

It is an arithmetic number, because the mean of its divisors is an integer number (42066).

2³¹⁹⁶⁴³ is an apocalyptic number.

319643 is a deficient number, since it is larger than the sum of its proper divisors (16885).

319643 is a wasteful number, since it uses less digits than its factorization.

319643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253.

The product of its digits is 1944, while the sum is 26.

The square root of 319643 is about 565.3697904911. The cubic root of 319643 is about 68.3735925100.

The spelling of 319643 in words is "three hundred nineteen thousand, six hundred forty-three".