331328485 has 4 divisors (see below), whose sum is σ = 397594188. Its totient is φ = 265062784.

The previous prime is 331328477. The next prime is 331328489. The reversal of 331328485 is 584823133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 223293249 + 108035236 = 14943^2 + 10394^2 .

It is a cyclic number.

It is not a de Polignac number, because 331328485 - 2³ = 331328477 is a prime.

It is a super-3 number, since 3×331328485³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331328489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33132844 + ... + 33132853.

It is an arithmetic number, because the mean of its divisors is an integer number (99398547).

Almost surely, 2^331328485 is an apocalyptic number.

It is an amenable number.

331328485 is a deficient number, since it is larger than the sum of its proper divisors (66265703).

331328485 is an equidigital number, since it uses as much as digits as its factorization.

331328485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66265702.

The product of its digits is 69120, while the sum is 37.

The square root of 331328485 is about 18202.4307442715. The cubic root of 331328485 is about 691.9683938977.

The spelling of 331328485 in words is "three hundred thirty-one million, three hundred twenty-eight thousand, four hundred eighty-five".