20172103 has 8 divisors (see below), whose sum is σ = 23797760. Its totient is φ = 16732440.

The previous prime is 20172101. The next prime is 20172107. The reversal of 20172103 is 30127102.

It is a happy number.

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 20172103 - 2¹ = 20172101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20172101) 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, 46263 + ... + 46696.

It is an arithmetic number, because the mean of its divisors is an integer number (2974720).

Almost surely, 2^20172103 is an apocalyptic number.

20172103 is a deficient number, since it is larger than the sum of its proper divisors (3625657).

20172103 is an equidigital number, since it uses as much as digits as its factorization.

20172103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92997.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 20172103 is about 4491.3364380772. The cubic root of 20172103 is about 272.2181379800.

Adding to 20172103 its reverse (30127102), we get a palindrome (50299205).

The spelling of 20172103 in words is "twenty million, one hundred seventy-two thousand, one hundred three".