311339 has 8 divisors (see below), whose sum is σ = 360960. Its totient is φ = 263016.

The previous prime is 311329. The next prime is 311341. The reversal of 311339 is 933113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311339 - 2⁴ = 311323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311339.

It is not an unprimeable number, because it can be changed into a prime (311329) 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 7 ways as a sum of consecutive naturals, for example, 272 + ... + 834.

It is an arithmetic number, because the mean of its divisors is an integer number (45120).

2³¹¹³³⁹ is an apocalyptic number.

311339 is a deficient number, since it is larger than the sum of its proper divisors (49621).

311339 is an equidigital number, since it uses as much as digits as its factorization.

311339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649.

The product of its digits is 243, while the sum is 20.

The square root of 311339 is about 557.9775981166. The cubic root of 311339 is about 67.7762977570.

The spelling of 311339 in words is "three hundred eleven thousand, three hundred thirty-nine".