331340 has 12 divisors (see below), whose sum is σ = 695856. Its totient is φ = 132528.

The previous prime is 331339. The next prime is 331349. The reversal of 331340 is 43133.

331340 = 200² + 201² + ... + 207².

It is a happy number.

331340 is nontrivially palindromic in base 9.

It is a zygodrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 331340.

It is not an unprimeable number, because it can be changed into a prime (331349) 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, 8264 + ... + 8303.

It is an arithmetic number, because the mean of its divisors is an integer number (57988).

2³³¹³⁴⁰ is an apocalyptic number.

It is an amenable number.

331340 is an abundant number, since it is smaller than the sum of its proper divisors (364516).

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

331340 is a wasteful number, since it uses less digits than its factorization.

331340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16576 (or 16574 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 331340 is about 575.6214033547. The cubic root of 331340 is about 69.1976410035.

Adding to 331340 its reverse (43133), we get a palindrome (374473).

The spelling of 331340 in words is "three hundred thirty-one thousand, three hundred forty".