20113002123231 has 16 divisors (see below), whose sum is σ = 27134028472320. Its totient is φ = 13250964307680.

The previous prime is 20113002123211. The next prime is 20113002123233. The reversal of 20113002123231 is 13232120031102.

It is not a de Polignac number, because 20113002123231 - 2¹⁰ = 20113002122207 is a prime.

It is a super-2 number, since 2×20113002123231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20113002123198 and 20113002123207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113002123233) 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, 80171955 + ... + 80422436.

It is an arithmetic number, because the mean of its divisors is an integer number (1695876779520).

Almost surely, 2^{20113002123231} is an apocalyptic number.

20113002123231 is a deficient number, since it is larger than the sum of its proper divisors (7021026349089).

20113002123231 is a wasteful number, since it uses less digits than its factorization.

20113002123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160594886.

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

Adding to 20113002123231 its reverse (13232120031102), we get a palindrome (33345122154333).

The spelling of 20113002123231 in words is "twenty trillion, one hundred thirteen billion, two million, one hundred twenty-three thousand, two hundred thirty-one".