311123230310020 has 12 divisors (see below), whose sum is σ = 653358783651084. Its totient is φ = 124449292124000.

The previous prime is 311123230310003. The next prime is 311123230310051. The reversal of 311123230310020 is 20013032321113.

It can be written as a sum of positive squares in 2 ways, for example, as 245407952912004 + 65715277398016 = 15665502^2 + 8106496^2 .

It is a junction number, because it is equal to n+sod(n) for n = 311123230309973 and 311123230310000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7778080757731 + ... + 7778080757770.

It is an arithmetic number, because the mean of its divisors is an integer number (54446565304257).

Almost surely, 2^{311123230310020} is an apocalyptic number.

It is an amenable number.

311123230310020 is an abundant number, since it is smaller than the sum of its proper divisors (342235553341064).

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

311123230310020 is a wasteful number, since it uses less digits than its factorization.

311123230310020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15556161515510 (or 15556161515508 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 311123230310020 its reverse (20013032321113), we get a palindrome (331136262631133).

The spelling of 311123230310020 in words is "three hundred eleven trillion, one hundred twenty-three billion, two hundred thirty million, three hundred ten thousand, twenty".