331384681651 has 16 divisors (see below), whose sum is σ = 359079174720. Its totient is φ = 305009210880.

The previous prime is 331384681601. The next prime is 331384681679. The reversal of 331384681651 is 156186483133.

It is a cyclic number.

It is not a de Polignac number, because 331384681651 - 2²¹ = 331382584499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331384681595 and 331384681604.

It is not an unprimeable number, because it can be changed into a prime (331384681601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2338116 + ... + 2475793.

It is an arithmetic number, because the mean of its divisors is an integer number (22442448420).

Almost surely, 2^331384681651 is an apocalyptic number.

331384681651 is a deficient number, since it is larger than the sum of its proper divisors (27694493069).

331384681651 is a wasteful number, since it uses less digits than its factorization.

331384681651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4814046.

The product of its digits is 1244160, while the sum is 49.

The spelling of 331384681651 in words is "three hundred thirty-one billion, three hundred eighty-four million, six hundred eighty-one thousand, six hundred fifty-one".