20123203110231 has 32 divisors (see below), whose sum is σ = 29827412500480. Its totient is φ = 11983854873600.

The previous prime is 20123203110229. The next prime is 20123203110259. The reversal of 20123203110231 is 13201130232102.

It is not a de Polignac number, because 20123203110231 - 2¹ = 20123203110229 is a prime.

It is a super-2 number, since 2×20123203110231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20123203110198 and 20123203110207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123203110331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141274215 + ... + 141416583.

It is an arithmetic number, because the mean of its divisors is an integer number (932106640640).

Almost surely, 2^{20123203110231} is an apocalyptic number.

20123203110231 is a deficient number, since it is larger than the sum of its proper divisors (9704209390249).

20123203110231 is a wasteful number, since it uses less digits than its factorization.

20123203110231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259327.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20123203110231 its reverse (13201130232102), we get a palindrome (33324333342333).

The spelling of 20123203110231 in words is "twenty trillion, one hundred twenty-three billion, two hundred three million, one hundred ten thousand, two hundred thirty-one".