311201442140 has 12 divisors (see below), whose sum is σ = 653523028536. Its totient is φ = 124480576848.

The previous prime is 311201442127. The next prime is 311201442143. The reversal of 311201442140 is 41244102113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311201442143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7780036034 + ... + 7780036073.

It is an arithmetic number, because the mean of its divisors is an integer number (54460252378).

Almost surely, 2^311201442140 is an apocalyptic number.

It is an amenable number.

311201442140 is an abundant number, since it is smaller than the sum of its proper divisors (342321586396).

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

311201442140 is a wasteful number, since it uses less digits than its factorization.

311201442140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15560072116 (or 15560072114 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 311201442140 its reverse (41244102113), we get a palindrome (352445544253).

The spelling of 311201442140 in words is "three hundred eleven billion, two hundred one million, four hundred forty-two thousand, one hundred forty".