320211982 has 4 divisors (see below), whose sum is σ = 480317976. Its totient is φ = 160105990.

The previous prime is 320211971. The next prime is 320212001. The reversal of 320211982 is 289112023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 289112023 = 541 ⋅534403.

It is a self number, because there is not a number n which added to its sum of digits gives 320211982.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 80052994 + ... + 80052997.

It is an arithmetic number, because the mean of its divisors is an integer number (120079494).

Almost surely, 2^320211982 is an apocalyptic number.

320211982 is a deficient number, since it is larger than the sum of its proper divisors (160105994).

320211982 is a wasteful number, since it uses less digits than its factorization.

320211982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160105993.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 320211982 is about 17894.4679160907. The cubic root of 320211982 is about 684.1413803827.

The spelling of 320211982 in words is "three hundred twenty million, two hundred eleven thousand, nine hundred eighty-two".