331232320988 has 24 divisors (see below), whose sum is σ = 631204971600. Its totient is φ = 151489191168.

The previous prime is 331232320927. The next prime is 331232320999. The reversal of 331232320988 is 889023232133.

It is a super-2 number, since 2×331232320988² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75141245 + ... + 75145652.

It is an arithmetic number, because the mean of its divisors is an integer number (26300207150).

Almost surely, 2^331232320988 is an apocalyptic number.

331232320988 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

331232320988 is a deficient number, since it is larger than the sum of its proper divisors (299972650612).

331232320988 is a wasteful number, since it uses less digits than its factorization.

331232320988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150286949 (or 150286947 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 331232320988 in words is "three hundred thirty-one billion, two hundred thirty-two million, three hundred twenty thousand, nine hundred eighty-eight".