20123110323 has 6 divisors (see below), whose sum is σ = 29066714924. Its totient is φ = 13415406876.

The previous prime is 20123110283. The next prime is 20123110363. The reversal of 20123110323 is 32301132102.

20123110323 is a `hidden beast` number, since 20 + 12 + 311 + 0 + 323 = 666.

It is an interprime number because it is at equal distance from previous prime (20123110283) and next prime (20123110363).

It is not a de Polignac number, because 20123110323 - 2¹⁷ = 20122979251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20123110296 and 20123110305.

It is not an unprimeable number, because it can be changed into a prime (20123110363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117950565 + ... + 1117950582.

Almost surely, 2^20123110323 is an apocalyptic number.

20123110323 is a deficient number, since it is larger than the sum of its proper divisors (8943604601).

20123110323 is a wasteful number, since it uses less digits than its factorization.

20123110323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235901153 (or 2235901150 counting only the distinct ones).

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

Adding to 20123110323 its reverse (32301132102), we get a palindrome (52424242425).

The spelling of 20123110323 in words is "twenty billion, one hundred twenty-three million, one hundred ten thousand, three hundred twenty-three".