312447 has 4 divisors (see below), whose sum is σ = 416600. Its totient is φ = 208296.

The previous prime is 312427. The next prime is 312451. The reversal of 312447 is 744213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744213 = 3 ⋅248071.

It is not a de Polignac number, because 312447 - 2⁶ = 312383 is a prime.

It is a D-number.

It is a Duffinian number.

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 312447.

It is not an unprimeable number, because it can be changed into a prime (312407) 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, 52072 + ... + 52077.

It is an arithmetic number, because the mean of its divisors is an integer number (104150).

2³¹²⁴⁴⁷ is an apocalyptic number.

312447 is a deficient number, since it is larger than the sum of its proper divisors (104153).

312447 is a wasteful number, since it uses less digits than its factorization.

312447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104152.

The product of its digits is 672, while the sum is 21.

The square root of 312447 is about 558.9695877237. The cubic root of 312447 is about 67.8566038211.

It can be divided in two parts, 31 and 2447, that multiplied together give a palindrome (75857).

The spelling of 312447 in words is "three hundred twelve thousand, four hundred forty-seven", and thus it is an iban number.