20231120133 has 24 divisors (see below), whose sum is σ = 33401160000. Its totient is φ = 11559340224.

The previous prime is 20231120111. The next prime is 20231120159. The reversal of 20231120133 is 33102113202.

20231120133 is a `hidden beast` number, since 202 + 311 + 20 + 133 = 666.

It is not a de Polignac number, because 20231120133 - 2⁵ = 20231120101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231120233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 988993 + ... + 1009241.

It is an arithmetic number, because the mean of its divisors is an integer number (1391715000).

Almost surely, 2^20231120133 is an apocalyptic number.

It is an amenable number.

20231120133 is a deficient number, since it is larger than the sum of its proper divisors (13170039867).

20231120133 is a wasteful number, since it uses less digits than its factorization.

20231120133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36121 (or 36118 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20231120133 its reverse (33102113202), we get a palindrome (53333233335).

The spelling of 20231120133 in words is "twenty billion, two hundred thirty-one million, one hundred twenty thousand, one hundred thirty-three".