331664044 has 12 divisors (see below), whose sum is σ = 580540464. Its totient is φ = 165795344.

The previous prime is 331664027. The next prime is 331664063. The reversal of 331664044 is 440466133.

It is a happy number.

It is a super-2 number, since 2×331664044² = 220002076164867872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331663997 and 331664015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27222 + ... + 37474.

It is an arithmetic number, because the mean of its divisors is an integer number (48378372).

Almost surely, 2^331664044 is an apocalyptic number.

It is an amenable number.

331664044 is a deficient number, since it is larger than the sum of its proper divisors (248876420).

331664044 is a wasteful number, since it uses less digits than its factorization.

331664044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18344 (or 18342 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 331664044 is about 18211.6458344654. The cubic root of 331664044 is about 692.2019163081.

The spelling of 331664044 in words is "three hundred thirty-one million, six hundred sixty-four thousand, forty-four".