20000023311123 has 6 divisors (see below), whose sum is σ = 28888922560524. Its totient is φ = 13333348874076.

The previous prime is 20000023311097. The next prime is 20000023311139. The reversal of 20000023311123 is 32111332000002.

It is not a de Polignac number, because 20000023311123 - 2⁸ = 20000023310867 is a prime.

It is a super-2 number, since 2×20000023311123² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20000023311096 and 20000023311105.

It is not an unprimeable number, because it can be changed into a prime (20000023312123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111112406165 + ... + 1111112406182.

It is an arithmetic number, because the mean of its divisors is an integer number (4814820426754).

Almost surely, 2^{20000023311123} is an apocalyptic number.

20000023311123 is a deficient number, since it is larger than the sum of its proper divisors (8888899249401).

20000023311123 is a wasteful number, since it uses less digits than its factorization.

20000023311123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222224812353 (or 2222224812350 counting only the distinct ones).

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

Adding to 20000023311123 its reverse (32111332000002), we get a palindrome (52111355311125).

The spelling of 20000023311123 in words is "twenty trillion, twenty-three million, three hundred eleven thousand, one hundred twenty-three".