331384681649 has 8 divisors (see below), whose sum is σ = 378980053248. Its totient is φ = 283852985760.

The previous prime is 331384681601. The next prime is 331384681679. The reversal of 331384681649 is 946186483133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331384681649 - 2¹² = 331384677553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 331384681594 and 331384681603.

It is not an unprimeable number, because it can be changed into a prime (331384681679) 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, 15907772 + ... + 15928589.

It is an arithmetic number, because the mean of its divisors is an integer number (47372506656).

Almost surely, 2^331384681649 is an apocalyptic number.

It is an amenable number.

331384681649 is a deficient number, since it is larger than the sum of its proper divisors (47595371599).

331384681649 is a wasteful number, since it uses less digits than its factorization.

331384681649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31837855.

The product of its digits is 8957952, while the sum is 56.

The spelling of 331384681649 in words is "three hundred thirty-one billion, three hundred eighty-four million, six hundred eighty-one thousand, six hundred forty-nine".