311659 has 2 divisors, whose sum is σ = 311660. Its totient is φ = 311658.

The previous prime is 311653. The next prime is 311677. The reversal of 311659 is 956113.

It is a weak prime.

It is an emirp because it is prime and its reverse (956113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311659 - 2¹⁵ = 278891 is a prime.

It is not a weakly prime, because it can be changed into another prime (311653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155829 + 155830.

It is an arithmetic number, because the mean of its divisors is an integer number (155830).

2³¹¹⁶⁵⁹ is an apocalyptic number.

311659 is a deficient number, since it is larger than the sum of its proper divisors (1).

311659 is an equidigital number, since it uses as much as digits as its factorization.

311659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810, while the sum is 25.

The square root of 311659 is about 558.2642743361. The cubic root of 311659 is about 67.7995103848.

The spelling of 311659 in words is "three hundred eleven thousand, six hundred fifty-nine".