311032213112 has 32 divisors (see below), whose sum is σ = 638783204400. Its totient is φ = 141320922624.

The previous prime is 311032213057. The next prime is 311032213127. The reversal of 311032213112 is 211312230113.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39427118 + ... + 39435005.

Almost surely, 2^311032213112 is an apocalyptic number.

It is an amenable number.

311032213112 is an abundant number, since it is smaller than the sum of its proper divisors (327750991288).

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

311032213112 is a wasteful number, since it uses less digits than its factorization.

311032213112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78862175 (or 78862171 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 311032213112 its reverse (211312230113), we get a palindrome (522344443225).

The spelling of 311032213112 in words is "three hundred eleven billion, thirty-two million, two hundred thirteen thousand, one hundred twelve".