20013113123 has 8 divisors (see below), whose sum is σ = 20191607040. Its totient is φ = 19835224200.

The previous prime is 20013113033. The next prime is 20013113137. The reversal of 20013113123 is 32131131002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20013113123 - 2¹⁰ = 20013112099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013113023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84665 + ... + 217242.

It is an arithmetic number, because the mean of its divisors is an integer number (2523950880).

Almost surely, 2^20013113123 is an apocalyptic number.

20013113123 is a deficient number, since it is larger than the sum of its proper divisors (178493917).

20013113123 is a wasteful number, since it uses less digits than its factorization.

20013113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302497.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20013113123 its reverse (32131131002), we get a palindrome (52144244125).

The spelling of 20013113123 in words is "twenty billion, thirteen million, one hundred thirteen thousand, one hundred twenty-three".