20441231013 has 16 divisors (see below), whose sum is σ = 31156350080. Its totient is φ = 11677775616.

The previous prime is 20441231003. The next prime is 20441231039. The reversal of 20441231013 is 31013214402.

It is not a de Polignac number, because 20441231013 - 2¹³ = 20441222821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441231003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34768 + ... + 205161.

It is an arithmetic number, because the mean of its divisors is an integer number (1947271880).

Almost surely, 2^20441231013 is an apocalyptic number.

It is an amenable number.

20441231013 is a deficient number, since it is larger than the sum of its proper divisors (10715119067).

20441231013 is a wasteful number, since it uses less digits than its factorization.

20441231013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243996.

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

Adding to 20441231013 its reverse (31013214402), we get a palindrome (51454445415).

The spelling of 20441231013 in words is "twenty billion, four hundred forty-one million, two hundred thirty-one thousand, thirteen".