320442131166 has 8 divisors (see below), whose sum is σ = 640884262344. Its totient is φ = 106814043720.

The previous prime is 320442131123. The next prime is 320442131167. The reversal of 320442131166 is 661131244023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

320442131166 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320442131167) 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, 26703510925 + ... + 26703510936.

It is an arithmetic number, because the mean of its divisors is an integer number (80110532793).

Almost surely, 2^320442131166 is an apocalyptic number.

320442131166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320442131166 is a wasteful number, since it uses less digits than its factorization.

320442131166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53407021866.

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 320442131166 its reverse (661131244023), we get a palindrome (981573375189).

The spelling of 320442131166 in words is "three hundred twenty billion, four hundred forty-two million, one hundred thirty-one thousand, one hundred sixty-six".