20303113123 has 4 divisors (see below), whose sum is σ = 20958052288. Its totient is φ = 19648173960.

The previous prime is 20303113111. The next prime is 20303113151. The reversal of 20303113123 is 32131130302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20303113123 - 2⁹ = 20303112611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20303113123.

It is not an unprimeable number, because it can be changed into a prime (20303113723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327469536 + ... + 327469597.

It is an arithmetic number, because the mean of its divisors is an integer number (5239513072).

Almost surely, 2^20303113123 is an apocalyptic number.

20303113123 is a deficient number, since it is larger than the sum of its proper divisors (654939165).

20303113123 is an equidigital number, since it uses as much as digits as its factorization.

20303113123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654939164.

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

Adding to 20303113123 its reverse (32131130302), we get a palindrome (52434243425).

The spelling of 20303113123 in words is "twenty billion, three hundred three million, one hundred thirteen thousand, one hundred twenty-three".