331028 has 6 divisors (see below), whose sum is σ = 579306. Its totient is φ = 165512.

The previous prime is 331027. The next prime is 331031. The reversal of 331028 is 820133.

It can be written as a sum of positive squares in only one way, i.e., 327184 + 3844 = 572^2 + 62^2 .

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 330997 and 331015.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 331028.

It is not an unprimeable number, because it can be changed into a prime (331027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41375 + ... + 41382.

It is an arithmetic number, because the mean of its divisors is an integer number (96551).

2³³¹⁰²⁸ is an apocalyptic number.

It is an amenable number.

331028 is a deficient number, since it is larger than the sum of its proper divisors (248278).

331028 is a wasteful number, since it uses less digits than its factorization.

331028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82761 (or 82759 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 331028 is about 575.3503280611. The cubic root of 331028 is about 69.1759146358.

The spelling of 331028 in words is "three hundred thirty-one thousand, twenty-eight".