20023111132 has 12 divisors (see below), whose sum is σ = 36248735880. Its totient is φ = 9666329456.

The previous prime is 20023111109. The next prime is 20023111133. The reversal of 20023111132 is 23111132002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023111133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86306398 + ... + 86306629.

It is an arithmetic number, because the mean of its divisors is an integer number (3020727990).

Almost surely, 2^20023111132 is an apocalyptic number.

It is an amenable number.

20023111132 is a deficient number, since it is larger than the sum of its proper divisors (16225624748).

20023111132 is a wasteful number, since it uses less digits than its factorization.

20023111132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172613060 (or 172613058 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20023111132 its reverse (23111132002), we get a palindrome (43134243134).

The spelling of 20023111132 in words is "twenty billion, twenty-three million, one hundred eleven thousand, one hundred thirty-two".