20313331304 has 32 divisors (see below), whose sum is σ = 44079571200. Its totient is φ = 8595512640.

The previous prime is 20313331301. The next prime is 20313331361. The reversal of 20313331304 is 40313331302.

It is a self number, because there is not a number n which added to its sum of digits gives 20313331304.

It is not an unprimeable number, because it can be changed into a prime (20313331301) 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 7 ways as a sum of consecutive naturals, for example, 2291387 + ... + 2300234.

It is an arithmetic number, because the mean of its divisors is an integer number (1377486600).

Almost surely, 2^20313331304 is an apocalyptic number.

It is an amenable number.

20313331304 is an abundant number, since it is smaller than the sum of its proper divisors (23766239896).

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

20313331304 is a wasteful number, since it uses less digits than its factorization.

20313331304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4591713 (or 4591709 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20313331304 its reverse (40313331302), we get a palindrome (60626662606).

The spelling of 20313331304 in words is "twenty billion, three hundred thirteen million, three hundred thirty-one thousand, three hundred four".