20313031330 has 8 divisors (see below), whose sum is σ = 36563456412. Its totient is φ = 8125212528.

The previous prime is 20313031301. The next prime is 20313031337. The reversal of 20313031330 is 3313031302.

It can be written as a sum of positive squares in 2 ways, for example, as 19672587081 + 640444249 = 140259^2 + 25307^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20313031298 and 20313031307.

It is not an unprimeable number, because it can be changed into a prime (20313031337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015651557 + ... + 1015651576.

Almost surely, 2^20313031330 is an apocalyptic number.

20313031330 is a deficient number, since it is larger than the sum of its proper divisors (16250425082).

20313031330 is a wasteful number, since it uses less digits than its factorization.

20313031330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031303140.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 20313031330 its reverse (3313031302), we get a palindrome (23626062632).

The spelling of 20313031330 in words is "twenty billion, three hundred thirteen million, thirty-one thousand, three hundred thirty".