20343112412 has 12 divisors (see below), whose sum is σ = 40686224880. Its totient is φ = 8718476736.

The previous prime is 20343112397. The next prime is 20343112417. The reversal of 20343112412 is 21421134302.

20343112412 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343112417) 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, 363269837 + ... + 363269892.

It is an arithmetic number, because the mean of its divisors is an integer number (3390518740).

Almost surely, 2^20343112412 is an apocalyptic number.

It is an amenable number.

20343112412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20343112412 is a wasteful number, since it uses less digits than its factorization.

20343112412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726539740 (or 726539738 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20343112412 its reverse (21421134302), we get a palindrome (41764246714).

The spelling of 20343112412 in words is "twenty billion, three hundred forty-three million, one hundred twelve thousand, four hundred twelve".