319801689 has 15 divisors (see below), whose sum is σ = 477968997. Its totient is φ = 213093828.

The previous prime is 319801687. The next prime is 319801721. The reversal of 319801689 is 986108913.

The square root of 319801689 is 17883.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 319801689 - 2¹ = 319801687 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (319801687) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 159954 + ... + 161940.

Almost surely, 2^319801689 is an apocalyptic number.

319801689 is the 17883-rd square number.

319801689 is the 8942-nd centered octagonal number.

It is an amenable number.

319801689 is a deficient number, since it is larger than the sum of its proper divisors (158167308).

319801689 is an frugal number, since it uses more digits than its factorization.

319801689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The cubic root of 319801689 is about 683.8490548729.

The spelling of 319801689 in words is "three hundred nineteen million, eight hundred one thousand, six hundred eighty-nine".