100020303 has 6 divisors (see below), whose sum is σ = 144473784. Its totient is φ = 66680196.

The previous prime is 100020269. The next prime is 100020331. The reversal of 100020303 is 303020001.

It is a happy number.

It is not a de Polignac number, because 100020303 - 2¹² = 100016207 is a prime.

It is a super-2 number, since 2×100020303² = 20008122024423618, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 11113367 = 100020303 / (1 + 0 + 0 + 0 + 2 + 0 + 3 + 0 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5556675 + ... + 5556692.

It is an arithmetic number, because the mean of its divisors is an integer number (24078964).

Almost surely, 2^100020303 is an apocalyptic number.

100020303 is a deficient number, since it is larger than the sum of its proper divisors (44453481).

100020303 is a wasteful number, since it uses less digits than its factorization.

100020303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11113373 (or 11113370 counting only the distinct ones).

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

The square root of 100020303 is about 10001.0150984788. The cubic root of 100020303 is about 464.1902939616.

Adding to 100020303 its reverse (303020001), we get a palindrome (403040304).

The spelling of 100020303 in words is "one hundred million, twenty thousand, three hundred three".