311404 has 12 divisors (see below), whose sum is σ = 550144. Its totient is φ = 154224.

The previous prime is 311393. The next prime is 311407. The reversal of 311404 is 404113.

It is not an unprimeable number, because it can be changed into a prime (311407) by changing a digit.

311404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 202 + ... + 814.

2³¹¹⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

311404 is a deficient number, since it is larger than the sum of its proper divisors (238740).

311404 is a wasteful number, since it uses less digits than its factorization.

311404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 311404 is about 558.0358411428. The cubic root of 311404 is about 67.7810141089.

Adding to 311404 its reverse (404113), we get a palindrome (715517).

The spelling of 311404 in words is "three hundred eleven thousand, four hundred four", and thus it is an iban number.