20112443131 has 8 divisors (see below), whose sum is σ = 21946086000. Its totient is φ = 18279673440.

The previous prime is 20112443111. The next prime is 20112443171. The reversal of 20112443131 is 13134421102.

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 20112443131 - 2⁹ = 20112442619 is a prime.

It is a super-2 number, since 2×20112443131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112443101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169656 + ... + 262693.

It is an arithmetic number, because the mean of its divisors is an integer number (2743260750).

Almost surely, 2^20112443131 is an apocalyptic number.

20112443131 is a deficient number, since it is larger than the sum of its proper divisors (1833642869).

20112443131 is a wasteful number, since it uses less digits than its factorization.

20112443131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436589.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20112443131 its reverse (13134421102), we get a palindrome (33246864233).

The spelling of 20112443131 in words is "twenty billion, one hundred twelve million, four hundred forty-three thousand, one hundred thirty-one".