311331332120 has 16 divisors (see below), whose sum is σ = 700495497360. Its totient is φ = 124532532832.

The previous prime is 311331332113. The next prime is 311331332183. The reversal of 311331332120 is 21233133113.

It is a super-2 number, since 2×311331332120² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3891641612 + ... + 3891641691.

It is an arithmetic number, because the mean of its divisors is an integer number (43780968585).

Almost surely, 2^311331332120 is an apocalyptic number.

It is an amenable number.

311331332120 is an abundant number, since it is smaller than the sum of its proper divisors (389164165240).

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

311331332120 is a wasteful number, since it uses less digits than its factorization.

311331332120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7783283314 (or 7783283310 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 311331332120 its reverse (21233133113), we get a palindrome (332564465233).

The spelling of 311331332120 in words is "three hundred eleven billion, three hundred thirty-one million, three hundred thirty-two thousand, one hundred twenty".