311304111302020 has 48 divisors (see below), whose sum is σ = 654018329664000. Its totient is φ = 124468376989824.

The previous prime is 311304111301993. The next prime is 311304111302029. The reversal of 311304111302020 is 20203111403113.

It is a junction number, because it is equal to n+sod(n) for n = 311304111301982 and 311304111302000.

It is not an unprimeable number, because it can be changed into a prime (311304111302029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649763797 + ... + 650242723.

It is an arithmetic number, because the mean of its divisors is an integer number (13625381868000).

Almost surely, 2^{311304111302020} is an apocalyptic number.

It is an amenable number.

311304111302020 is an abundant number, since it is smaller than the sum of its proper divisors (342714218361980).

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

311304111302020 is a wasteful number, since it uses less digits than its factorization.

311304111302020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492772 (or 492770 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 311304111302020 its reverse (20203111403113), we get a palindrome (331507222705133).

The spelling of 311304111302020 in words is "three hundred eleven trillion, three hundred four billion, one hundred eleven million, three hundred two thousand, twenty".