331685456 has 20 divisors (see below), whose sum is σ = 645208704. Its totient is φ = 165180000.

The previous prime is 331685447. The next prime is 331685491. The reversal of 331685456 is 654586133.

It is a super-2 number, since 2×331685456² = 220030483443855872, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 37280 + ... + 45311.

Almost surely, 2^331685456 is an apocalyptic number.

It is an amenable number.

331685456 is a deficient number, since it is larger than the sum of its proper divisors (313523248).

331685456 is a wasteful number, since it uses less digits than its factorization.

331685456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82850 (or 82844 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 331685456 is about 18212.2336905718. The cubic root of 331685456 is about 692.2168120123.

The spelling of 331685456 in words is "three hundred thirty-one million, six hundred eighty-five thousand, four hundred fifty-six".