331040 has 24 divisors (see below), whose sum is σ = 782460. Its totient is φ = 132352.

The previous prime is 331031. The next prime is 331043. The reversal of 331040 is 40133.

It can be written as a sum of positive squares in 2 ways, for example, as 309136 + 21904 = 556^2 + 148^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 331040.

It is not an unprimeable number, because it can be changed into a prime (331043) 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, 875 + ... + 1194.

2³³¹⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

331040 is an abundant number, since it is smaller than the sum of its proper divisors (451420).

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

331040 is a wasteful number, since it uses less digits than its factorization.

331040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084 (or 2076 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 331040 is about 575.3607563955. The cubic root of 331040 is about 69.1767505177.

Adding to 331040 its reverse (40133), we get a palindrome (371173).

The spelling of 331040 in words is "three hundred thirty-one thousand, forty".