20131300231021 has 8 divisors (see below), whose sum is σ = 23629016487680. Its totient is φ = 16789038030288.

The previous prime is 20131300231013. The next prime is 20131300231061. The reversal of 20131300231021 is 12013200313102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20131300231021 - 2³ = 20131300231013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20131300231021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131300231061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38863513701 + ... + 38863514218.

It is an arithmetic number, because the mean of its divisors is an integer number (2953627060960).

Almost surely, 2^{20131300231021} is an apocalyptic number.

It is an amenable number.

20131300231021 is a deficient number, since it is larger than the sum of its proper divisors (3497716256659).

20131300231021 is an equidigital number, since it uses as much as digits as its factorization.

20131300231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77727027963.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20131300231021 its reverse (12013200313102), we get a palindrome (32144500544123).

The spelling of 20131300231021 in words is "twenty trillion, one hundred thirty-one billion, three hundred million, two hundred thirty-one thousand, twenty-one".