20203131113 has 8 divisors (see below), whose sum is σ = 22198340640. Its totient is φ = 18234348480.

The previous prime is 20203131089. The next prime is 20203131119. The reversal of 20203131113 is 31113130202.

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 20203131113 - 2⁶ = 20203131049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20203131091 and 20203131100.

It is not an unprimeable number, because it can be changed into a prime (20203131119) 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, 6605120 + ... + 6608177.

It is an arithmetic number, because the mean of its divisors is an integer number (2774792580).

Almost surely, 2^20203131113 is an apocalyptic number.

It is an amenable number.

20203131113 is a deficient number, since it is larger than the sum of its proper divisors (1995209527).

20203131113 is a wasteful number, since it uses less digits than its factorization.

20203131113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13213447.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20203131113 its reverse (31113130202), we get a palindrome (51316261315).

The spelling of 20203131113 in words is "twenty billion, two hundred three million, one hundred thirty-one thousand, one hundred thirteen".