20323043412 has 72 divisors (see below), whose sum is σ = 55219467744. Its totient is φ = 5800592448.

The previous prime is 20323043407. The next prime is 20323043443. The reversal of 20323043412 is 21434032302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 568903 + ... + 603569.

It is an arithmetic number, because the mean of its divisors is an integer number (766937052).

Almost surely, 2^20323043412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323043412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27609733872).

20323043412 is an abundant number, since it is smaller than the sum of its proper divisors (34896424332).

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

20323043412 is a wasteful number, since it uses less digits than its factorization.

20323043412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35685 (or 35676 counting only the distinct ones).

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

Adding to 20323043412 its reverse (21434032302), we get a palindrome (41757075714).

It can be divided in two parts, 203230 and 43412, that added together give a palindrome (246642).

The spelling of 20323043412 in words is "twenty billion, three hundred twenty-three million, forty-three thousand, four hundred twelve".