20113123303 has 96 divisors (see below), whose sum is σ = 27205960320. Its totient is φ = 14467092480.

The previous prime is 20113123213. The next prime is 20113123343. The reversal of 20113123303 is 30332131102.

It is not a de Polignac number, because 20113123303 - 2⁹ = 20113122791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113123343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 146811051 + ... + 146811187.

It is an arithmetic number, because the mean of its divisors is an integer number (283395420).

Almost surely, 2^20113123303 is an apocalyptic number.

20113123303 is a deficient number, since it is larger than the sum of its proper divisors (7092837017).

20113123303 is a wasteful number, since it uses less digits than its factorization.

20113123303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20113123303 its reverse (30332131102), we get a palindrome (50445254405).

The spelling of 20113123303 in words is "twenty billion, one hundred thirteen million, one hundred twenty-three thousand, three hundred three".