20312243133 has 32 divisors (see below), whose sum is σ = 34482336000. Its totient is φ = 10344692736.

The previous prime is 20312243123. The next prime is 20312243177. The reversal of 20312243133 is 33134221302.

It is not a de Polignac number, because 20312243133 - 2¹² = 20312239037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312243123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1274908 + ... + 1290741.

It is an arithmetic number, because the mean of its divisors is an integer number (1077573000).

Almost surely, 2^20312243133 is an apocalyptic number.

It is an amenable number.

20312243133 is a deficient number, since it is larger than the sum of its proper divisors (14170092867).

20312243133 is a wasteful number, since it uses less digits than its factorization.

20312243133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565701.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 20312243133 its reverse (33134221302), we get a palindrome (53446464435).

The spelling of 20312243133 in words is "twenty billion, three hundred twelve million, two hundred forty-three thousand, one hundred thirty-three".