311896 has 16 divisors (see below), whose sum is σ = 630000. Its totient is φ = 143904.

The previous prime is 311881. The next prime is 311897. The reversal of 311896 is 698113.

It is a happy number.

It is a super-2 number, since 2×311896² = 194558229632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311897) 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, 1396 + ... + 1603.

It is an arithmetic number, because the mean of its divisors is an integer number (39375).

2³¹¹⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

311896 is an abundant number, since it is smaller than the sum of its proper divisors (318104).

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

311896 is a wasteful number, since it uses less digits than its factorization.

311896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018 (or 3014 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 311896 is about 558.4764990579. The cubic root of 311896 is about 67.8166919974.

The spelling of 311896 in words is "three hundred eleven thousand, eight hundred ninety-six".