331485 has 48 divisors (see below), whose sum is σ = 689472. Its totient is φ = 134400.

The previous prime is 331451. The next prime is 331489. The reversal of 331485 is 584133.

It is not a de Polignac number, because 331485 - 2¹⁸ = 69341 is a prime.

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 331485.

It is not an unprimeable number, because it can be changed into a prime (331489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8065 + ... + 8105.

It is an arithmetic number, because the mean of its divisors is an integer number (14364).

2³³¹⁴⁸⁵ is an apocalyptic number.

331485 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

331485 is an abundant number, since it is smaller than the sum of its proper divisors (357987).

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

331485 is a wasteful number, since it uses less digits than its factorization.

331485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 67 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 331485 is about 575.7473404194. The cubic root of 331485 is about 69.2077335516.

It can be divided in two parts, 33148 and 5, that added together give a triangular number (33153 = T₂₅₇).

The spelling of 331485 in words is "three hundred thirty-one thousand, four hundred eighty-five".