20123112303 has 24 divisors (see below), whose sum is σ = 33226592256. Its totient is φ = 11496330000.

The previous prime is 20123112293. The next prime is 20123112311. The reversal of 20123112303 is 30321132102.

20123112303 is a `hidden beast` number, since 201 + 231 + 1 + 230 + 3 = 666.

It is not a de Polignac number, because 20123112303 - 2⁸ = 20123112047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123112323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265698 + ... + 332928.

It is an arithmetic number, because the mean of its divisors is an integer number (1384441344).

Almost surely, 2^20123112303 is an apocalyptic number.

20123112303 is a deficient number, since it is larger than the sum of its proper divisors (13103479953).

20123112303 is a wasteful number, since it uses less digits than its factorization.

20123112303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71995 (or 71992 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20123112303 its reverse (30321132102), we get a palindrome (50444244405).

The spelling of 20123112303 in words is "twenty billion, one hundred twenty-three million, one hundred twelve thousand, three hundred three".