20133440031123 has 12 divisors (see below), whose sum is σ = 29081680384848. Its totient is φ = 13422272684400.

The previous prime is 20133440031119. The next prime is 20133440031143. The reversal of 20133440031123 is 32113004433102.

It is a happy number.

20133440031123 is a `hidden beast` number, since 2 + 0 + 1 + 3 + 344 + 0 + 0 + 311 + 2 + 3 = 666.

It is not a de Polignac number, because 20133440031123 - 2² = 20133440031119 is a prime.

It is a super-2 number, since 2×20133440031123² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20133440031143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6524961 + ... + 9101757.

It is an arithmetic number, because the mean of its divisors is an integer number (2423473365404).

Almost surely, 2^{20133440031123} is an apocalyptic number.

20133440031123 is a deficient number, since it is larger than the sum of its proper divisors (8948240353725).

20133440031123 is a wasteful number, since it uses less digits than its factorization.

20133440031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444954 (or 3444951 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 20133440031123 its reverse (32113004433102), we get a palindrome (52246444464225).

The spelling of 20133440031123 in words is "twenty trillion, one hundred thirty-three billion, four hundred forty million, thirty-one thousand, one hundred twenty-three".