20304031434 has 16 divisors (see below), whose sum is σ = 41296335840. Its totient is φ = 6653298320.

The previous prime is 20304031403. The next prime is 20304031477. The reversal of 20304031434 is 43413040302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28677657 + ... + 28678364.

It is an arithmetic number, because the mean of its divisors is an integer number (2581020990).

Almost surely, 2^20304031434 is an apocalyptic number.

20304031434 is an abundant number, since it is smaller than the sum of its proper divisors (20992304406).

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

20304031434 is a wasteful number, since it uses less digits than its factorization.

20304031434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57356085.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20304031434 its reverse (43413040302), we get a palindrome (63717071736).

The spelling of 20304031434 in words is "twenty billion, three hundred four million, thirty-one thousand, four hundred thirty-four".