311120140420 has 24 divisors (see below), whose sum is σ = 653379562584. Its totient is φ = 124442862336.

The previous prime is 311120140333. The next prime is 311120140423. The reversal of 311120140420 is 24041021113.

It can be written as a sum of positive squares in 4 ways, for example, as 42333885504 + 268786254916 = 205752^2 + 518446^2 .

It is not an unprimeable number, because it can be changed into a prime (311120140423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186184 + ... + 810496.

It is an arithmetic number, because the mean of its divisors is an integer number (27224148441).

Almost surely, 2^311120140420 is an apocalyptic number.

It is an amenable number.

311120140420 is an abundant number, since it is smaller than the sum of its proper divisors (342259422164).

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

311120140420 is a wasteful number, since it uses less digits than its factorization.

311120140420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649239 (or 649237 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 311120140420 its reverse (24041021113), we get a palindrome (335161161533).

The spelling of 311120140420 in words is "three hundred eleven billion, one hundred twenty million, one hundred forty thousand, four hundred twenty".