331321346656 has 24 divisors (see below), whose sum is σ = 673330480704. Its totient is φ = 160316780160.

The previous prime is 331321346623. The next prime is 331321346669. The reversal of 331321346656 is 656643123133.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166995655 + ... + 166997638.

It is an arithmetic number, because the mean of its divisors is an integer number (28055436696).

Almost surely, 2^331321346656 is an apocalyptic number.

It is an amenable number.

331321346656 is an abundant number, since it is smaller than the sum of its proper divisors (342009134048).

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

331321346656 is a wasteful number, since it uses less digits than its factorization.

331321346656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333993334 (or 333993326 counting only the distinct ones).

The product of its digits is 699840, while the sum is 43.

Adding to 331321346656 its reverse (656643123133), we get a palindrome (987964469789).

The spelling of 331321346656 in words is "three hundred thirty-one billion, three hundred twenty-one million, three hundred forty-six thousand, six hundred fifty-six".