312311255 has 4 divisors (see below), whose sum is σ = 374773512. Its totient is φ = 249849000.

The previous prime is 312311243. The next prime is 312311257. The reversal of 312311255 is 552113213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552113213 = 8233 ⋅67061.

It is not a de Polignac number, because 312311255 - 2⁴ = 312311239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312311255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312311257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31231121 + ... + 31231130.

It is an arithmetic number, because the mean of its divisors is an integer number (93693378).

Almost surely, 2^312311255 is an apocalyptic number.

312311255 is a deficient number, since it is larger than the sum of its proper divisors (62462257).

312311255 is an equidigital number, since it uses as much as digits as its factorization.

312311255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62462256.

The product of its digits is 900, while the sum is 23.

The square root of 312311255 is about 17672.3302085492. The cubic root of 312311255 is about 678.4677545662.

Adding to 312311255 its reverse (552113213), we get a palindrome (864424468).

The spelling of 312311255 in words is "three hundred twelve million, three hundred eleven thousand, two hundred fifty-five".