20113031013443 has 16 divisors (see below), whose sum is σ = 22044193416000. Its totient is φ = 18265795924992.

The previous prime is 20113031013433. The next prime is 20113031013487. The reversal of 20113031013443 is 34431013031102.

It is a cyclic number.

It is not a de Polignac number, because 20113031013443 - 2¹⁶ = 20113030947907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113031013433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11884583 + ... + 13471056.

It is an arithmetic number, because the mean of its divisors is an integer number (1377762088500).

Almost surely, 2^{20113031013443} is an apocalyptic number.

20113031013443 is a deficient number, since it is larger than the sum of its proper divisors (1931162402557).

20113031013443 is a wasteful number, since it uses less digits than its factorization.

20113031013443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25357294.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20113031013443 its reverse (34431013031102), we get a palindrome (54544044044545).

The spelling of 20113031013443 in words is "twenty trillion, one hundred thirteen billion, thirty-one million, thirteen thousand, four hundred forty-three".