320223031999 has 4 divisors (see below), whose sum is σ = 344855572936. Its totient is φ = 295590491064.

The previous prime is 320223031957. The next prime is 320223032011. The reversal of 320223031999 is 999130322023.

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

It is a cyclic number.

It is not a de Polignac number, because 320223031999 - 2²⁹ = 319686161087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320223031939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12316270449 + ... + 12316270474.

It is an arithmetic number, because the mean of its divisors is an integer number (86213893234).

Almost surely, 2^320223031999 is an apocalyptic number.

320223031999 is a deficient number, since it is larger than the sum of its proper divisors (24632540937).

320223031999 is a wasteful number, since it uses less digits than its factorization.

320223031999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24632540936.

The product of its (nonzero) digits is 157464, while the sum is 43.

The spelling of 320223031999 in words is "three hundred twenty billion, two hundred twenty-three million, thirty-one thousand, nine hundred ninety-nine".