20031103123 has 8 divisors (see below), whose sum is σ = 20336299776. Its totient is φ = 19726547400.

The previous prime is 20031103109. The next prime is 20031103171. The reversal of 20031103123 is 32130113002.

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 20031103123 - 2²⁹ = 19494232211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20031103097 and 20031103106.

It is not an unprimeable number, because it can be changed into a prime (20031103193) 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, 97063 + ... + 222448.

It is an arithmetic number, because the mean of its divisors is an integer number (2542037472).

Almost surely, 2^20031103123 is an apocalyptic number.

20031103123 is a deficient number, since it is larger than the sum of its proper divisors (305196653).

20031103123 is an equidigital number, since it uses as much as digits as its factorization.

20031103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320465.

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

Adding to 20031103123 its reverse (32130113002), we get a palindrome (52161216125).

The spelling of 20031103123 in words is "twenty billion, thirty-one million, one hundred three thousand, one hundred twenty-three".