20013230131 has 4 divisors (see below), whose sum is σ = 20013831432. Its totient is φ = 20012628832.

The previous prime is 20013230117. The next prime is 20013230137. The reversal of 20013230131 is 13103231002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13103231002 = 2 ⋅6551615501.

It is a cyclic number.

It is not a de Polignac number, because 20013230131 - 2⁵ = 20013230099 is a prime.

It is a super-2 number, since 2×20013230131² (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 (20013230137) 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, 247606 + ... + 318331.

It is an arithmetic number, because the mean of its divisors is an integer number (5003457858).

Almost surely, 2^20013230131 is an apocalyptic number.

20013230131 is a deficient number, since it is larger than the sum of its proper divisors (601301).

20013230131 is an equidigital number, since it uses as much as digits as its factorization.

20013230131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601300.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20013230131 its reverse (13103231002), we get a palindrome (33116461133).

The spelling of 20013230131 in words is "twenty billion, thirteen million, two hundred thirty thousand, one hundred thirty-one".