20113123394 has 48 divisors (see below), whose sum is σ = 37957760568. Its totient is φ = 7922573568.

The previous prime is 20113123369. The next prime is 20113123397. The reversal of 20113123394 is 49332131102.

It can be written as a sum of positive squares in 4 ways, for example, as 16239679225 + 3873444169 = 127435^2 + 62237^2 .

It is not an unprimeable number, because it can be changed into a prime (20113123397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 262964 + ... + 330720.

Almost surely, 2^20113123394 is an apocalyptic number.

20113123394 is a deficient number, since it is larger than the sum of its proper divisors (17844637174).

20113123394 is a wasteful number, since it uses less digits than its factorization.

20113123394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68019 (or 68012 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

Adding to 20113123394 its reverse (49332131102), we get a palindrome (69445254496).

The spelling of 20113123394 in words is "twenty billion, one hundred thirteen million, one hundred twenty-three thousand, three hundred ninety-four".