311844 has 24 divisors (see below), whose sum is σ = 784000. Its totient is φ = 95904.

The previous prime is 311827. The next prime is 311867. The reversal of 311844 is 448113.

It is a self number, because there is not a number n which added to its sum of digits gives 311844.

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 311844.

It is an unprimeable number.

311844 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844 + ... + 1155.

2³¹¹⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

311844 is an abundant number, since it is smaller than the sum of its proper divisors (472156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311844 is a wasteful number, since it uses less digits than its factorization.

311844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019 (or 2017 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 311844 is about 558.4299418907. The cubic root of 311844 is about 67.8129229376.

Adding to 311844 its reverse (448113), we get a palindrome (759957).

The spelling of 311844 in words is "three hundred eleven thousand, eight hundred forty-four".