320204331442 has 32 divisors (see below), whose sum is σ = 525078687744. Its totient is φ = 145989162000.

The previous prime is 320204331439. The next prime is 320204331443. The reversal of 320204331442 is 244133402023.

It is a self number, because there is not a number n which added to its sum of digits gives 320204331442.

It is not an unprimeable number, because it can be changed into a prime (320204331443) 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 15 ways as a sum of consecutive naturals, for example, 1580184 + ... + 1771267.

It is an arithmetic number, because the mean of its divisors is an integer number (16408708992).

Almost surely, 2^320204331442 is an apocalyptic number.

320204331442 is a deficient number, since it is larger than the sum of its proper divisors (204874356302).

320204331442 is a wasteful number, since it uses less digits than its factorization.

320204331442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351574.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 320204331442 its reverse (244133402023), we get a palindrome (564337733465).

The spelling of 320204331442 in words is "three hundred twenty billion, two hundred four million, three hundred thirty-one thousand, four hundred forty-two".