331030310020 has 12 divisors (see below), whose sum is σ = 695163651084. Its totient is φ = 132412124000.

The previous prime is 331030310011. The next prime is 331030310021. The reversal of 331030310020 is 20013030133.

It can be written as a sum of positive squares in 2 ways, for example, as 232167858244 + 98862451776 = 481838^2 + 314424^2 .

It is a junction number, because it is equal to n+sod(n) for n = 331030309976 and 331030310003.

It is not an unprimeable number, because it can be changed into a prime (331030310021) 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, 8275757731 + ... + 8275757770.

It is an arithmetic number, because the mean of its divisors is an integer number (57930304257).

Almost surely, 2^331030310020 is an apocalyptic number.

It is an amenable number.

331030310020 is an abundant number, since it is smaller than the sum of its proper divisors (364133341064).

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

331030310020 is a wasteful number, since it uses less digits than its factorization.

331030310020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16551515510 (or 16551515508 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 331030310020 its reverse (20013030133), we get a palindrome (351043340153).

The spelling of 331030310020 in words is "three hundred thirty-one billion, thirty million, three hundred ten thousand, twenty".