311608 has 16 divisors (see below), whose sum is σ = 637560. Its totient is φ = 141600.

The previous prime is 311603. The next prime is 311609. The reversal of 311608 is 806113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311603) 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 3 ways as a sum of consecutive naturals, for example, 1683 + ... + 1858.

2³¹¹⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

311608 is an abundant number, since it is smaller than the sum of its proper divisors (325952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311608 is a wasteful number, since it uses less digits than its factorization.

311608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3558 (or 3554 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 311608 is about 558.2185951758. The cubic root of 311608 is about 67.7958119369.

It can be divided in two parts, 311 and 608, that added together give a palindrome (919).

The spelling of 311608 in words is "three hundred eleven thousand, six hundred eight".