320131311222 has 16 divisors (see below), whose sum is σ = 645304061952. Its totient is φ = 105870197160.

The previous prime is 320131311187. The next prime is 320131311229. The reversal of 320131311222 is 222113131023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320131311229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210059154 + ... + 210060677.

It is an arithmetic number, because the mean of its divisors is an integer number (40331503872).

Almost surely, 2^320131311222 is an apocalyptic number.

320131311222 is an abundant number, since it is smaller than the sum of its proper divisors (325172750730).

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

320131311222 is a wasteful number, since it uses less digits than its factorization.

320131311222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420119963.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 320131311222 its reverse (222113131023), we get a palindrome (542244442245).

The spelling of 320131311222 in words is "three hundred twenty billion, one hundred thirty-one million, three hundred eleven thousand, two hundred twenty-two".