311303231112 has 16 divisors (see below), whose sum is σ = 778258077840. Its totient is φ = 103767743696.

The previous prime is 311303231051. The next prime is 311303231119. The reversal of 311303231112 is 211132303113.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (311303231119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6485483958 + ... + 6485484005.

It is an arithmetic number, because the mean of its divisors is an integer number (48641129865).

Almost surely, 2^311303231112 is an apocalyptic number.

It is an amenable number.

311303231112 is an abundant number, since it is smaller than the sum of its proper divisors (466954846728).

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

311303231112 is a wasteful number, since it uses less digits than its factorization.

311303231112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12970967972 (or 12970967968 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 311303231112 its reverse (211132303113), we get a palindrome (522435534225).

The spelling of 311303231112 in words is "three hundred eleven billion, three hundred three million, two hundred thirty-one thousand, one hundred twelve".