20231113231 has 12 divisors (see below), whose sum is σ = 23384044912. Its totient is φ = 17146065024.

The previous prime is 20231113213. The next prime is 20231113271. The reversal of 20231113231 is 13231113202.

It is not a de Polignac number, because 20231113231 - 2⁹ = 20231112719 is a prime.

It is a super-2 number, since 2×20231113231² (a number of 21 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 = 20231113199 and 20231113208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231113271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126990 + ... + 237883.

Almost surely, 2^20231113231 is an apocalyptic number.

20231113231 is a deficient number, since it is larger than the sum of its proper divisors (3152931681).

20231113231 is an frugal number, since it uses more digits than its factorization.

20231113231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365058 (or 364969 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20231113231 its reverse (13231113202), we get a palindrome (33462226433).

The spelling of 20231113231 in words is "twenty billion, two hundred thirty-one million, one hundred thirteen thousand, two hundred thirty-one".