312271 has 4 divisors (see below), whose sum is σ = 325872. Its totient is φ = 298672.

The previous prime is 312269. The next prime is 312281. The reversal of 312271 is 172213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312271 - 2¹ = 312269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6766 + ... + 6811.

It is an arithmetic number, because the mean of its divisors is an integer number (81468).

2³¹²²⁷¹ is an apocalyptic number.

312271 is a deficient number, since it is larger than the sum of its proper divisors (13601).

312271 is a wasteful number, since it uses less digits than its factorization.

312271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13600.

The product of its digits is 84, while the sum is 16.

The square root of 312271 is about 558.8121330107. The cubic root of 312271 is about 67.8438603207.

Adding to 312271 its reverse (172213), we get a palindrome (484484).

The spelling of 312271 in words is "three hundred twelve thousand, two hundred seventy-one", and thus it is an iban number.