311159 has 4 divisors (see below), whose sum is σ = 312360. Its totient is φ = 309960.

The previous prime is 311153. The next prime is 311173. The reversal of 311159 is 951113.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 951113 = 29 ⋅32797.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311159 is a prime.

It is an Ulam number.

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 311159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311153) 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, 32 + ... + 789.

It is an arithmetic number, because the mean of its divisors is an integer number (78090).

2³¹¹¹⁵⁹ is an apocalyptic number.

311159 is a deficient number, since it is larger than the sum of its proper divisors (1201).

311159 is an equidigital number, since it uses as much as digits as its factorization.

311159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200.

The product of its digits is 135, while the sum is 20.

The square root of 311159 is about 557.8162779984. The cubic root of 311159 is about 67.7632336635.

The spelling of 311159 in words is "three hundred eleven thousand, one hundred fifty-nine".