319533564529 has 3 divisors (see below), whose sum is σ = 319534129803. Its totient is φ = 319532999256.

The previous prime is 319533564521. The next prime is 319533564569. The reversal of 319533564529 is 925465335913.

The square root of 319533564529 is 565273.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 925465335913 = 1231 ⋅751799623.

It can be written as a sum of positive squares in only one way, i.e., 191191935025 + 128341629504 = 437255^2 + 358248^2 .

It is not a de Polignac number, because 319533564529 - 2³ = 319533564521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 319533564529.

It is not an unprimeable number, because it can be changed into a prime (319533564521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 282637 + ... + 847909.

It is an arithmetic number, because the mean of its divisors is an integer number (106511376601).

Almost surely, 2^319533564529 is an apocalyptic number.

319533564529 is the 565273-rd square number.

319533564529 is the 282637-th centered octagonal number.

It is an amenable number.

319533564529 is a deficient number, since it is larger than the sum of its proper divisors (565274).

319533564529 is an frugal number, since it uses more digits than its factorization.

319533564529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130546 (or 565273 counting only the distinct ones).

The product of its digits is 13122000, while the sum is 55.

The spelling of 319533564529 in words is "three hundred nineteen billion, five hundred thirty-three million, five hundred sixty-four thousand, five hundred twenty-nine".