328031407993 has 32 divisors (see below), whose sum is σ = 351054950400. Its totient is φ = 305640262656.

The previous prime is 328031407961. The next prime is 328031408011. The reversal of 328031407993 is 399704130823.

It is a cyclic number.

It is not a de Polignac number, because 328031407993 - 2⁵ = 328031407961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328031407903) 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 31 ways as a sum of consecutive naturals, for example, 134053296 + ... + 134055742.

It is an arithmetic number, because the mean of its divisors is an integer number (10970467200).

Almost surely, 2^328031407993 is an apocalyptic number.

It is an amenable number.

328031407993 is a deficient number, since it is larger than the sum of its proper divisors (23023542407).

328031407993 is a wasteful number, since it uses less digits than its factorization.

328031407993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061.

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 328031407993 in words is "three hundred twenty-eight billion, thirty-one million, four hundred seven thousand, nine hundred ninety-three".