20244043231 has 4 divisors (see below), whose sum is σ = 20246782264. Its totient is φ = 20241304200.

The previous prime is 20244043223. The next prime is 20244043247. The reversal of 20244043231 is 13234044202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13234044202 = 2 ⋅6617022101.

It is a cyclic number.

It is not a de Polignac number, because 20244043231 - 2³ = 20244043223 is a prime.

It is a super-2 number, since 2×20244043231² (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 = 20244043196 and 20244043205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20244043201) 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, 1358400 + ... + 1373221.

It is an arithmetic number, because the mean of its divisors is an integer number (5061695566).

Almost surely, 2^20244043231 is an apocalyptic number.

20244043231 is a deficient number, since it is larger than the sum of its proper divisors (2739033).

20244043231 is an equidigital number, since it uses as much as digits as its factorization.

20244043231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739032.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20244043231 its reverse (13234044202), we get a palindrome (33478087433).

The spelling of 20244043231 in words is "twenty billion, two hundred forty-four million, forty-three thousand, two hundred thirty-one".