20203011230131 has 4 divisors (see below), whose sum is σ = 20446421004072. Its totient is φ = 19959601456192.

The previous prime is 20203011230057. The next prime is 20203011230161. The reversal of 20203011230131 is 13103211030202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20203011230131 - 2¹¹ = 20203011228083 is a prime.

It is a super-2 number, since 2×20203011230131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20203011230099 and 20203011230108.

It is not an unprimeable number, because it can be changed into a prime (20203011230161) 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, 121704886846 + ... + 121704887011.

It is an arithmetic number, because the mean of its divisors is an integer number (5111605251018).

Almost surely, 2^{20203011230131} is an apocalyptic number.

20203011230131 is a deficient number, since it is larger than the sum of its proper divisors (243409773941).

20203011230131 is an equidigital number, since it uses as much as digits as its factorization.

20203011230131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243409773940.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20203011230131 its reverse (13103211030202), we get a palindrome (33306222260333).

The spelling of 20203011230131 in words is "twenty trillion, two hundred three billion, eleven million, two hundred thirty thousand, one hundred thirty-one".