20112230131 has 4 divisors (see below), whose sum is σ = 22985405872. Its totient is φ = 17239054392.

The previous prime is 20112230111. The next prime is 20112230153. The reversal of 20112230131 is 13103221102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13103221102 = 2 ⋅6551610551.

It is not a de Polignac number, because 20112230131 - 2¹⁹ = 20111705843 is a prime.

It is a super-2 number, since 2×20112230131² (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 (20112230111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1436587860 + ... + 1436587873.

It is an arithmetic number, because the mean of its divisors is an integer number (5746351468).

Almost surely, 2^20112230131 is an apocalyptic number.

20112230131 is a deficient number, since it is larger than the sum of its proper divisors (2873175741).

20112230131 is an equidigital number, since it uses as much as digits as its factorization.

20112230131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873175740.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20112230131 its reverse (13103221102), we get a palindrome (33215451233).

The spelling of 20112230131 in words is "twenty billion, one hundred twelve million, two hundred thirty thousand, one hundred thirty-one".