320131223330 has 16 divisors (see below), whose sum is σ = 582176783160. Its totient is φ = 126732360192.

The previous prime is 320131223323. The next prime is 320131223341. The reversal of 320131223330 is 33322131023.

It can be written as a sum of positive squares in 4 ways, for example, as 314948807209 + 5182416121 = 561203^2 + 71989^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 320131223296 and 320131223305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165015125 + ... + 165017064.

Almost surely, 2^320131223330 is an apocalyptic number.

320131223330 is a deficient number, since it is larger than the sum of its proper divisors (262045559830).

320131223330 is a wasteful number, since it uses less digits than its factorization.

320131223330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330032293.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 320131223330 its reverse (33322131023), we get a palindrome (353453354353).

The spelling of 320131223330 in words is "three hundred twenty billion, one hundred thirty-one million, two hundred twenty-three thousand, three hundred thirty".