20441240031 has 4 divisors (see below), whose sum is σ = 27254986712. Its totient is φ = 13627493352.

The previous prime is 20441239999. The next prime is 20441240033. The reversal of 20441240031 is 13004214402.

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

It is not a de Polignac number, because 20441240031 - 2⁵ = 20441239999 is a prime.

It is a super-2 number, since 2×20441240031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441240033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3406873336 + ... + 3406873341.

It is an arithmetic number, because the mean of its divisors is an integer number (6813746678).

Almost surely, 2^20441240031 is an apocalyptic number.

20441240031 is a deficient number, since it is larger than the sum of its proper divisors (6813746681).

20441240031 is an equidigital number, since it uses as much as digits as its factorization.

20441240031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6813746680.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20441240031 its reverse (13004214402), we get a palindrome (33445454433).

The spelling of 20441240031 in words is "twenty billion, four hundred forty-one million, two hundred forty thousand, thirty-one".