331456 has 14 divisors (see below), whose sum is σ = 657860. Its totient is φ = 165696.

The previous prime is 331451. The next prime is 331489. The reversal of 331456 is 654133.

It is not an unprimeable number, because it can be changed into a prime (331451) by changing a digit.

331456 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 2526 + ... + 2653.

It is an arithmetic number, because the mean of its divisors is an integer number (46990).

2³³¹⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

331456 is a deficient number, since it is larger than the sum of its proper divisors (326404).

331456 is an equidigital number, since it uses as much as digits as its factorization.

331456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5191 (or 5181 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 331456 is about 575.7221552103. The cubic root of 331456 is about 69.2057152775.

Adding to 331456 its reverse (654133), we get a palindrome (985589).

It can be divided in two parts, 331 and 456, that added together give a palindrome (787).

The spelling of 331456 in words is "three hundred thirty-one thousand, four hundred fifty-six".