20103023 has 4 divisors (see below), whose sum is σ = 20171928. Its totient is φ = 20034120.

The previous prime is 20102983. The next prime is 20103047. The reversal of 20103023 is 32030102.

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 20103023 - 2¹² = 20098927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20102995 and 20103013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100023) 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 3 ways as a sum of consecutive naturals, for example, 34013 + ... + 34598.

It is an arithmetic number, because the mean of its divisors is an integer number (5042982).

Almost surely, 2^20103023 is an apocalyptic number.

20103023 is a deficient number, since it is larger than the sum of its proper divisors (68905).

20103023 is an equidigital number, since it uses as much as digits as its factorization.

20103023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68904.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20103023 is about 4483.6394814927. The cubic root of 20103023 is about 271.9070427376.

Adding to 20103023 its reverse (32030102), we get a palindrome (52133125).

The spelling of 20103023 in words is "twenty million, one hundred three thousand, twenty-three".