331491982 has 8 divisors (see below), whose sum is σ = 514384200. Its totient is φ = 160030584.

The previous prime is 331491977. The next prime is 331491983. The reversal of 331491982 is 289194133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331491983) 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, 2857632 + ... + 2857747.

It is an arithmetic number, because the mean of its divisors is an integer number (64298025).

Almost surely, 2^331491982 is an apocalyptic number.

331491982 is a deficient number, since it is larger than the sum of its proper divisors (182892218).

331491982 is a wasteful number, since it uses less digits than its factorization.

331491982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5715410.

The product of its digits is 46656, while the sum is 40.

The square root of 331491982 is about 18206.9212663756. The cubic root of 331491982 is about 692.0821945090.

The spelling of 331491982 in words is "three hundred thirty-one million, four hundred ninety-one thousand, nine hundred eighty-two".