20131300223443 has 16 divisors (see below), whose sum is σ = 21066176839680. Its totient is φ = 19217762497600.

The previous prime is 20131300223381. The next prime is 20131300223509. The reversal of 20131300223443 is 34432200313102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20131300223443 - 2²⁵ = 20131266669011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20131300223543) 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, 6713838 + ... + 9237868.

It is an arithmetic number, because the mean of its divisors is an integer number (1316636052480).

Almost surely, 2^{20131300223443} is an apocalyptic number.

20131300223443 is a deficient number, since it is larger than the sum of its proper divisors (934876616237).

20131300223443 is a wasteful number, since it uses less digits than its factorization.

20131300223443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528258.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 20131300223443 its reverse (34432200313102), we get a palindrome (54563500536545).

The spelling of 20131300223443 in words is "twenty trillion, one hundred thirty-one billion, three hundred million, two hundred twenty-three thousand, four hundred forty-three".