20103423 has 4 divisors (see below), whose sum is σ = 26804568. Its totient is φ = 13402280.

The previous prime is 20103383. The next prime is 20103427. The reversal of 20103423 is 32430102.

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 20103423 - 2⁶ = 20103359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103427) 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, 3350568 + ... + 3350573.

It is an arithmetic number, because the mean of its divisors is an integer number (6701142).

Almost surely, 2^20103423 is an apocalyptic number.

20103423 is a deficient number, since it is larger than the sum of its proper divisors (6701145).

20103423 is an equidigital number, since it uses as much as digits as its factorization.

20103423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6701144.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20103423 is about 4483.6840878902. The cubic root of 20103423 is about 271.9088461496.

Adding to 20103423 its reverse (32430102), we get a palindrome (52533525).

The spelling of 20103423 in words is "twenty million, one hundred three thousand, four hundred twenty-three".