20444112231 has 4 divisors (see below), whose sum is σ = 27258816312. Its totient is φ = 13629408152.

The previous prime is 20444112209. The next prime is 20444112307. The reversal of 20444112231 is 13221144402.

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

It is a cyclic number.

It is not a de Polignac number, because 20444112231 - 2¹⁹ = 20443587943 is a prime.

It is a super-2 number, since 2×20444112231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444112131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3407352036 + ... + 3407352041.

It is an arithmetic number, because the mean of its divisors is an integer number (6814704078).

Almost surely, 2^20444112231 is an apocalyptic number.

20444112231 is a deficient number, since it is larger than the sum of its proper divisors (6814704081).

20444112231 is an equidigital number, since it uses as much as digits as its factorization.

20444112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6814704080.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 20444112231 its reverse (13221144402), we get a palindrome (33665256633).

The spelling of 20444112231 in words is "twenty billion, four hundred forty-four million, one hundred twelve thousand, two hundred thirty-one".