311321331120 has 40 divisors (see below), whose sum is σ = 965096127216. Its totient is φ = 83019021568.

The previous prime is 311321331107. The next prime is 311321331149. The reversal of 311321331120 is 21133123113.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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, 648585867 + ... + 648586346.

Almost surely, 2^311321331120 is an apocalyptic number.

311321331120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311321331120 is an abundant number, since it is smaller than the sum of its proper divisors (653774796096).

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

311321331120 is a wasteful number, since it uses less digits than its factorization.

311321331120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297172229 (or 1297172223 counting only the distinct ones).

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

Adding to 311321331120 its reverse (21133123113), we get a palindrome (332454454233).

The spelling of 311321331120 in words is "three hundred eleven billion, three hundred twenty-one million, three hundred thirty-one thousand, one hundred twenty".