311859 has 6 divisors (see below), whose sum is σ = 450476. Its totient is φ = 207900.

The previous prime is 311827. The next prime is 311867. The reversal of 311859 is 958113.

It is not a de Polignac number, because 311859 - 2⁵ = 311827 is a prime.

It is a Duffinian number.

311859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (311869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17317 + ... + 17334.

2³¹¹⁸⁵⁹ is an apocalyptic number.

311859 is a deficient number, since it is larger than the sum of its proper divisors (138617).

311859 is a wasteful number, since it uses less digits than its factorization.

311859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34657 (or 34654 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 311859 is about 558.4433722411. The cubic root of 311859 is about 67.8140102094.

The spelling of 311859 in words is "three hundred eleven thousand, eight hundred fifty-nine".