20100303 has 12 divisors (see below), whose sum is σ = 29582280. Its totient is φ = 13147056.

The previous prime is 20100299. The next prime is 20100317. The reversal of 20100303 is 30300102.

It is a happy number.

It is not a de Polignac number, because 20100303 - 2² = 20100299 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 (20100343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20593 + ... + 21546.

It is an arithmetic number, because the mean of its divisors is an integer number (2465190).

Almost surely, 2^20100303 is an apocalyptic number.

20100303 is a deficient number, since it is larger than the sum of its proper divisors (9481977).

20100303 is a wasteful number, since it uses less digits than its factorization.

20100303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42198 (or 42195 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 20100303 is about 4483.3361462197. The cubic root of 20100303 is about 271.8947789019.

Adding to 20100303 its reverse (30300102), we get a palindrome (50400405).

The spelling of 20100303 in words is "twenty million, one hundred thousand, three hundred three".