331685448 has 64 divisors (see below), whose sum is σ = 853104960. Its totient is φ = 107417856.

The previous prime is 331685447. The next prime is 331685491. The reversal of 331685448 is 844586133.

It is a super-2 number, since 2×331685448² = 220030472829921408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331685447) 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, 134886 + ... + 137322.

It is an arithmetic number, because the mean of its divisors is an integer number (13329765).

Almost surely, 2^331685448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331685448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (426552480).

331685448 is an abundant number, since it is smaller than the sum of its proper divisors (521419512).

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

331685448 is a wasteful number, since it uses less digits than its factorization.

331685448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606 (or 2602 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 331685448 is about 18212.2334709393. The cubic root of 331685448 is about 692.2168064470.

The spelling of 331685448 in words is "three hundred thirty-one million, six hundred eighty-five thousand, four hundred forty-eight".