312644 has 12 divisors (see below), whose sum is σ = 559104. Its totient is φ = 152904.

The previous prime is 312643. The next prime is 312673. The reversal of 312644 is 446213.

It is a happy number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312644.

It is not an unprimeable number, because it can be changed into a prime (312643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644 + ... + 1019.

It is an arithmetic number, because the mean of its divisors is an integer number (46592).

2³¹²⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

312644 is a deficient number, since it is larger than the sum of its proper divisors (246460).

312644 is a wasteful number, since it uses less digits than its factorization.

312644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714 (or 1712 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 312644 is about 559.1457770564. The cubic root of 312644 is about 67.8708621779.

Adding to 312644 its reverse (446213), we get a palindrome (758857).

The spelling of 312644 in words is "three hundred twelve thousand, six hundred forty-four".