331223420444442 has 64 divisors (see below), whose sum is σ = 678545296805376. Its totient is φ = 107729994980160.

The previous prime is 331223420444431. The next prime is 331223420444471. The reversal of 331223420444442 is 244444024322133.

It is a junction number, because it is equal to n+sod(n) for n = 331223420444394 and 331223420444403.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4084951633 + ... + 4085032715.

It is an arithmetic number, because the mean of its divisors is an integer number (10602270262584).

Almost surely, 2^{331223420444442} is an apocalyptic number.

331223420444442 is an abundant number, since it is smaller than the sum of its proper divisors (347321876360934).

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

331223420444442 is a wasteful number, since it uses less digits than its factorization.

331223420444442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97115.

The product of its (nonzero) digits is 1769472, while the sum is 42.

Adding to 331223420444442 its reverse (244444024322133), we get a palindrome (575667444766575).

The spelling of 331223420444442 in words is "three hundred thirty-one trillion, two hundred twenty-three billion, four hundred twenty million, four hundred forty-four thousand, four hundred forty-two".