20112324231 has 4 divisors (see below), whose sum is σ = 26816432312. Its totient is φ = 13408216152.

The previous prime is 20112324191. The next prime is 20112324269. The reversal of 20112324231 is 13242321102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20112324231 - 2⁷ = 20112324103 is a prime.

It is a super-2 number, since 2×20112324231² (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 = 20112324198 and 20112324207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112322231) 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 3 ways as a sum of consecutive naturals, for example, 3352054036 + ... + 3352054041.

It is an arithmetic number, because the mean of its divisors is an integer number (6704108078).

Almost surely, 2^20112324231 is an apocalyptic number.

20112324231 is a deficient number, since it is larger than the sum of its proper divisors (6704108081).

20112324231 is an equidigital number, since it uses as much as digits as its factorization.

20112324231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6704108080.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20112324231 its reverse (13242321102), we get a palindrome (33354645333).

The spelling of 20112324231 in words is "twenty billion, one hundred twelve million, three hundred twenty-four thousand, two hundred thirty-one".