20331344312 has 8 divisors (see below), whose sum is σ = 38121270600. Its totient is φ = 10165672152.

The previous prime is 20331344311. The next prime is 20331344333. The reversal of 20331344312 is 21344313302.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331344311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270709012 + ... + 1270709027.

It is an arithmetic number, because the mean of its divisors is an integer number (4765158825).

Almost surely, 2^20331344312 is an apocalyptic number.

It is an amenable number.

20331344312 is a deficient number, since it is larger than the sum of its proper divisors (17789926288).

20331344312 is a wasteful number, since it uses less digits than its factorization.

20331344312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541418045 (or 2541418041 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 20331344312 its reverse (21344313302), we get a palindrome (41675657614).

The spelling of 20331344312 in words is "twenty billion, three hundred thirty-one million, three hundred forty-four thousand, three hundred twelve".