311971996 has 24 divisors (see below), whose sum is σ = 624720096. Its totient is φ = 133536000.

The previous prime is 311971991. The next prime is 311972029. The reversal of 311971996 is 699179113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311971991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17496 + ... + 30496.

It is an arithmetic number, because the mean of its divisors is an integer number (26030004).

Almost surely, 2^311971996 is an apocalyptic number.

It is an amenable number.

311971996 is an abundant number, since it is smaller than the sum of its proper divisors (312748100).

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

311971996 is a wasteful number, since it uses less digits than its factorization.

311971996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13869 (or 13867 counting only the distinct ones).

The product of its digits is 91854, while the sum is 46.

The square root of 311971996 is about 17662.7290077157. The cubic root of 311971996 is about 678.2219957980.

The spelling of 311971996 in words is "three hundred eleven million, nine hundred seventy-one thousand, nine hundred ninety-six".