319920539 has 8 divisors (see below), whose sum is σ = 326446368. Its totient is φ = 313436160.

The previous prime is 319920487. The next prime is 319920551. The reversal of 319920539 is 935029913.

It is a happy number.

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 319920539 - 2²⁰ = 318871963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 319920496 and 319920505.

It is not an unprimeable number, because it can be changed into a prime (319920439) 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, 5474 + ... + 25880.

It is an arithmetic number, because the mean of its divisors is an integer number (40805796).

Almost surely, 2^319920539 is an apocalyptic number.

319920539 is a deficient number, since it is larger than the sum of its proper divisors (6525829).

319920539 is a wasteful number, since it uses less digits than its factorization.

319920539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20725.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 319920539 is about 17886.3226796343. The cubic root of 319920539 is about 683.9337588178.

The spelling of 319920539 in words is "three hundred nineteen million, nine hundred twenty thousand, five hundred thirty-nine".