319013641 has 4 divisors (see below), whose sum is σ = 319272772. Its totient is φ = 318754512.

The previous prime is 319013567. The next prime is 319013663. The reversal of 319013641 is 146310913.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158231241 + 160782400 = 12579^2 + 12680^2 .

It is a cyclic number.

It is not a de Polignac number, because 319013641 - 2⁹ = 319013129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (319013671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127710 + ... + 130183.

It is an arithmetic number, because the mean of its divisors is an integer number (79818193).

Almost surely, 2^319013641 is an apocalyptic number.

It is an amenable number.

319013641 is a deficient number, since it is larger than the sum of its proper divisors (259131).

319013641 is a wasteful number, since it uses less digits than its factorization.

319013641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259130.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 319013641 is about 17860.9529700965. The cubic root of 319013641 is about 683.2868844626.

The spelling of 319013641 in words is "three hundred nineteen million, thirteen thousand, six hundred forty-one".