311908 has 6 divisors (see below), whose sum is σ = 545846. Its totient is φ = 155952.

The previous prime is 311897. The next prime is 311951. The reversal of 311908 is 809113.

It can be written as a sum of positive squares in only one way, i.e., 278784 + 33124 = 528^2 + 182^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 38985 + ... + 38992.

2³¹¹⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

311908 is a deficient number, since it is larger than the sum of its proper divisors (233938).

311908 is a wasteful number, since it uses less digits than its factorization.

311908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77981 (or 77979 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 311908 is about 558.4872424684. The cubic root of 311908 is about 67.8175617209.

It can be divided in two parts, 3 and 11908, that added together give a palindrome (11911).

The spelling of 311908 in words is "three hundred eleven thousand, nine hundred eight".