320312221111 has 8 divisors (see below), whose sum is σ = 320482001664. Its totient is φ = 320142491640.

The previous prime is 320312221081. The next prime is 320312221133. The reversal of 320312221111 is 111122213023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320312221111 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 (320312221181) 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 7 ways as a sum of consecutive naturals, for example, 19567216 + ... + 19583578.

It is an arithmetic number, because the mean of its divisors is an integer number (40060250208).

Almost surely, 2^320312221111 is an apocalyptic number.

320312221111 is a deficient number, since it is larger than the sum of its proper divisors (169780553).

320312221111 is a wasteful number, since it uses less digits than its factorization.

320312221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25541.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 320312221111 its reverse (111122213023), we get a palindrome (431434434134).

The spelling of 320312221111 in words is "three hundred twenty billion, three hundred twelve million, two hundred twenty-one thousand, one hundred eleven".