311449 has 4 divisors (see below), whose sum is σ = 318736. Its totient is φ = 304164.

The previous prime is 311447. The next prime is 311453. The reversal of 311449 is 944113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 944113 = 191 ⋅4943.

It is a cyclic number.

It is not a de Polignac number, because 311449 - 2¹ = 311447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311447) 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, 3579 + ... + 3664.

It is an arithmetic number, because the mean of its divisors is an integer number (79684).

2³¹¹⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

311449 is a deficient number, since it is larger than the sum of its proper divisors (7287).

311449 is an equidigital number, since it uses as much as digits as its factorization.

311449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7286.

The product of its digits is 432, while the sum is 22.

The square root of 311449 is about 558.0761596772. The cubic root of 311449 is about 67.7842788911.

The spelling of 311449 in words is "three hundred eleven thousand, four hundred forty-nine".