311479 has 4 divisors (see below), whose sum is σ = 355984. Its totient is φ = 266976.

The previous prime is 311473. The next prime is 311533. The reversal of 311479 is 974113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311479 - 2⁵ = 311447 is a prime.

It is a Duffinian number.

311479 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22242 + ... + 22255.

It is an arithmetic number, because the mean of its divisors is an integer number (88996).

2³¹¹⁴⁷⁹ is an apocalyptic number.

311479 is a deficient number, since it is larger than the sum of its proper divisors (44505).

311479 is an equidigital number, since it uses as much as digits as its factorization.

311479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44504.

The product of its digits is 756, while the sum is 25.

The square root of 311479 is about 558.1030370819. The cubic root of 311479 is about 67.7864552378.

The spelling of 311479 in words is "three hundred eleven thousand, four hundred seventy-nine".