20123133012323 has 16 divisors (see below), whose sum is σ = 22093521569280. Its totient is φ = 18176341444800.

The previous prime is 20123133012313. The next prime is 20123133012337. The reversal of 20123133012323 is 32321033132102.

It is a de Polignac number, because none of the positive numbers 2^k-20123133012323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20123133012292 and 20123133012301.

It is not an unprimeable number, because it can be changed into a prime (20123133012313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1875263 + ... + 6615351.

It is an arithmetic number, because the mean of its divisors is an integer number (1380845098080).

Almost surely, 2^{20123133012323} is an apocalyptic number.

20123133012323 is a deficient number, since it is larger than the sum of its proper divisors (1970388556957).

20123133012323 is a wasteful number, since it uses less digits than its factorization.

20123133012323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742578.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20123133012323 its reverse (32321033132102), we get a palindrome (52444166144425).

The spelling of 20123133012323 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty-three million, twelve thousand, three hundred twenty-three".