311440330120 has 32 divisors (see below), whose sum is σ = 700820340120. Its totient is φ = 124561981440.

The previous prime is 311440330087. The next prime is 311440330121. The reversal of 311440330120 is 21033044113.

It can be written as a sum of positive squares in 4 ways, for example, as 281810216164 + 29630113956 = 530858^2 + 172134^2 .

It is a junction number, because it is equal to n+sod(n) for n = 311440330091 and 311440330100.

It is not an unprimeable number, because it can be changed into a prime (311440330121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82041 + ... + 793480.

Almost surely, 2^311440330120 is an apocalyptic number.

It is an amenable number.

311440330120 is an abundant number, since it is smaller than the sum of its proper divisors (389380010000).

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

311440330120 is a wasteful number, since it uses less digits than its factorization.

311440330120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884425 (or 884421 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 311440330120 its reverse (21033044113), we get a palindrome (332473374233).

The spelling of 311440330120 in words is "three hundred eleven billion, four hundred forty million, three hundred thirty thousand, one hundred twenty".