312255 has 24 divisors (see below), whose sum is σ = 563472. Its totient is φ = 165888.

The previous prime is 312253. The next prime is 312269. The reversal of 312255 is 552213.

It is a happy number.

It is not a de Polignac number, because 312255 - 2¹ = 312253 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 312255.

It is not an unprimeable number, because it can be changed into a prime (312251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1087 + ... + 1343.

It is an arithmetic number, because the mean of its divisors is an integer number (23478).

2³¹²²⁵⁵ is an apocalyptic number.

312255 is a deficient number, since it is larger than the sum of its proper divisors (251217).

312255 is an equidigital number, since it uses as much as digits as its factorization.

312255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 265 counting only the distinct ones).

The product of its digits is 300, while the sum is 18.

The square root of 312255 is about 558.7978167459. The cubic root of 312255 is about 67.8427015832.

Adding to 312255 its reverse (552213), we get a palindrome (864468).

The spelling of 312255 in words is "three hundred twelve thousand, two hundred fifty-five".