331255 has 8 divisors (see below), whose sum is σ = 402192. Its totient is φ = 261888.

The previous prime is 331249. The next prime is 331259. The reversal of 331255 is 552133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331255 - 2⁷ = 331127 is a prime.

It is a Duffinian number.

331255 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144 + ... + 826.

It is an arithmetic number, because the mean of its divisors is an integer number (50274).

2³³¹²⁵⁵ is an apocalyptic number.

331255 is a deficient number, since it is larger than the sum of its proper divisors (70937).

331255 is an equidigital number, since it uses as much as digits as its factorization.

331255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785.

The product of its digits is 450, while the sum is 19.

The square root of 331255 is about 575.5475653671. The cubic root of 331255 is about 69.1917233132.

Adding to 331255 its product of digits (450), we get a triangular number (331705 = T₈₁₄).

Adding to 331255 its reverse (552133), we get a palindrome (883388).

The spelling of 331255 in words is "three hundred thirty-one thousand, two hundred fifty-five".