331220012004 has 48 divisors (see below), whose sum is σ = 981392630400. Its totient is φ = 94634288928.

The previous prime is 331220011981. The next prime is 331220012021. The reversal of 331220012004 is 400210022133.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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, 219060099 + ... + 219061610.

It is an arithmetic number, because the mean of its divisors is an integer number (20445679800).

Almost surely, 2^331220012004 is an apocalyptic number.

It is an amenable number.

331220012004 is an abundant number, since it is smaller than the sum of its proper divisors (650172618396).

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

331220012004 is a wasteful number, since it uses less digits than its factorization.

331220012004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438121729 (or 438121721 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 331220012004 its reverse (400210022133), we get a palindrome (731430034137).

The spelling of 331220012004 in words is "three hundred thirty-one billion, two hundred twenty million, twelve thousand, four".