201020103 has 8 divisors (see below), whose sum is σ = 297807600. Its totient is φ = 134013384.

The previous prime is 201020101. The next prime is 201020123. The reversal of 201020103 is 301020102.

It is a happy number.

It is not a de Polignac number, because 201020103 - 2¹ = 201020101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020101) 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, 3722568 + ... + 3722621.

It is an arithmetic number, because the mean of its divisors is an integer number (37225950).

Almost surely, 2^201020103 is an apocalyptic number.

201020103 is a deficient number, since it is larger than the sum of its proper divisors (96787497).

201020103 is an equidigital number, since it uses as much as digits as its factorization.

201020103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7445198 (or 7445192 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 201020103 is about 14178.1558391774. The cubic root of 201020103 is about 585.7961284150.

Adding to 201020103 its reverse (301020102), we get a palindrome (502040205).

Subtracting 201020103 from its reverse (301020102), we obtain a palindrome (99999999).

The spelling of 201020103 in words is "two hundred one million, twenty thousand, one hundred three".