311032423140 has 48 divisors (see below), whose sum is σ = 871949113728. Its totient is φ = 82841186304.

The previous prime is 311032423139. The next prime is 311032423189. The reversal of 311032423140 is 41324230113.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 311032423140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3099997 + ... + 3198756.

It is an arithmetic number, because the mean of its divisors is an integer number (18165606536).

Almost surely, 2^311032423140 is an apocalyptic number.

311032423140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311032423140 is an abundant number, since it is smaller than the sum of its proper divisors (560916690588).

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

311032423140 is a wasteful number, since it uses less digits than its factorization.

311032423140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6299588 (or 6299586 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 311032423140 its reverse (41324230113), we get a palindrome (352356653253).

The spelling of 311032423140 in words is "three hundred eleven billion, thirty-two million, four hundred twenty-three thousand, one hundred forty".