20123132113231 has 32 divisors (see below), whose sum is σ = 23366227507200. Its totient is φ = 16973084943360.

The previous prime is 20123132113219. The next prime is 20123132113247. The reversal of 20123132113231 is 13231123132102.

It is not a de Polignac number, because 20123132113231 - 2⁵ = 20123132113199 is a prime.

It is a super-2 number, since 2×20123132113231² (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 = 20123132113196 and 20123132113205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123132113031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 566145246 + ... + 566180788.

It is an arithmetic number, because the mean of its divisors is an integer number (730194609600).

Almost surely, 2^{20123132113231} is an apocalyptic number.

20123132113231 is a deficient number, since it is larger than the sum of its proper divisors (3243095393969).

20123132113231 is a wasteful number, since it uses less digits than its factorization.

20123132113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37759.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 20123132113231 its reverse (13231123132102), we get a palindrome (33354255245333).

The spelling of 20123132113231 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty-two million, one hundred thirteen thousand, two hundred thirty-one".