20113120303 has 4 divisors (see below), whose sum is σ = 20229381288. Its totient is φ = 19996859320.

The previous prime is 20113120283. The next prime is 20113120327. The reversal of 20113120303 is 30302131102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30302131102 = 2 ⋅15151065551.

It is a cyclic number.

It is not a de Polignac number, because 20113120303 - 2⁵ = 20113120271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113120603) 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, 58130233 + ... + 58130578.

It is an arithmetic number, because the mean of its divisors is an integer number (5057345322).

Almost surely, 2^20113120303 is an apocalyptic number.

20113120303 is a deficient number, since it is larger than the sum of its proper divisors (116260985).

20113120303 is a wasteful number, since it uses less digits than its factorization.

20113120303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116260984.

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

Adding to 20113120303 its reverse (30302131102), we get a palindrome (50415251405).

The spelling of 20113120303 in words is "twenty billion, one hundred thirteen million, one hundred twenty thousand, three hundred three".