319216369 has 8 divisors (see below), whose sum is σ = 330696360. Its totient is φ = 307767936.

The previous prime is 319216367. The next prime is 319216399. The reversal of 319216369 is 963612913.

It can be written as a sum of positive squares in 4 ways, for example, as 114383025 + 204833344 = 10695^2 + 14312^2 .

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 319216369 - 2¹ = 319216367 is a prime.

It is a super-2 number, since 2×319216369² = 203798180475088322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (319216367) 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, 13749 + ... + 28765.

It is an arithmetic number, because the mean of its divisors is an integer number (41337045).

Almost surely, 2^319216369 is an apocalyptic number.

It is an amenable number.

319216369 is a deficient number, since it is larger than the sum of its proper divisors (11479991).

319216369 is a wasteful number, since it uses less digits than its factorization.

319216369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15779.

The product of its digits is 52488, while the sum is 40.

The square root of 319216369 is about 17866.6272418719. The cubic root of 319216369 is about 683.4315930616.

The spelling of 319216369 in words is "three hundred nineteen million, two hundred sixteen thousand, three hundred sixty-nine".