20103013123 has 16 divisors (see below), whose sum is σ = 20848183200. Its totient is φ = 19368792576.

The previous prime is 20103013097. The next prime is 20103013153. The reversal of 20103013123 is 32131030102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20103013123 is a prime.

It is a super-2 number, since 2×20103013123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20103013097 and 20103013106.

It is not an unprimeable number, because it can be changed into a prime (20103013153) 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 15 ways as a sum of consecutive naturals, for example, 8147536 + ... + 8150002.

It is an arithmetic number, because the mean of its divisors is an integer number (1303011450).

Almost surely, 2^20103013123 is an apocalyptic number.

20103013123 is a deficient number, since it is larger than the sum of its proper divisors (745170077).

20103013123 is a wasteful number, since it uses less digits than its factorization.

20103013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4566.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20103013123 its reverse (32131030102), we get a palindrome (52234043225).

The spelling of 20103013123 in words is "twenty billion, one hundred three million, thirteen thousand, one hundred twenty-three".