331640008 has 16 divisors (see below), whose sum is σ = 710657280. Its totient is φ = 142131408.

The previous prime is 331639937. The next prime is 331640009. The reversal of 331640008 is 800046133.

It is not an unprimeable number, because it can be changed into a prime (331640009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2961016 + ... + 2961127.

It is an arithmetic number, because the mean of its divisors is an integer number (44416080).

Almost surely, 2^331640008 is an apocalyptic number.

It is an amenable number.

331640008 is an abundant number, since it is smaller than the sum of its proper divisors (379017272).

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

331640008 is a wasteful number, since it uses less digits than its factorization.

331640008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5922156 (or 5922152 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 331640008 is about 18210.9859151008. The cubic root of 331640008 is about 692.1851943998.

The spelling of 331640008 in words is "three hundred thirty-one million, six hundred forty thousand, eight".