331663544 has 64 divisors (see below), whose sum is σ = 687744000. Its totient is φ = 149333760.

The previous prime is 331663543. The next prime is 331663561. The reversal of 331663544 is 445366133.

It is a super-2 number, since 2×331663544² = 220001412837279872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331663543) 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 15 ways as a sum of consecutive naturals, for example, 277412 + ... + 278604.

It is an arithmetic number, because the mean of its divisors is an integer number (10746000).

Almost surely, 2^331663544 is an apocalyptic number.

It is an amenable number.

331663544 is an abundant number, since it is smaller than the sum of its proper divisors (356080456).

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

331663544 is a wasteful number, since it uses less digits than its factorization.

331663544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 1304 counting only the distinct ones).

The product of its digits is 77760, while the sum is 35.

The square root of 331663544 is about 18211.6321069804. The cubic root of 331663544 is about 692.2015684650.

The spelling of 331663544 in words is "three hundred thirty-one million, six hundred sixty-three thousand, five hundred forty-four".