100720303 has 4 divisors (see below), whose sum is σ = 100925928. Its totient is φ = 100514680.

The previous prime is 100720297. The next prime is 100720343. The reversal of 100720303 is 303027001.

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 100720303 - 2¹³ = 100712111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100720343) 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, 102076 + ... + 103057.

It is an arithmetic number, because the mean of its divisors is an integer number (25231482).

Almost surely, 2^100720303 is an apocalyptic number.

100720303 is a deficient number, since it is larger than the sum of its proper divisors (205625).

100720303 is an equidigital number, since it uses as much as digits as its factorization.

100720303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205624.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 100720303 is about 10035.9505279769. The cubic root of 100720303 is about 465.2706683325.

Adding to 100720303 its reverse (303027001), we get a palindrome (403747304).

The spelling of 100720303 in words is "one hundred million, seven hundred twenty thousand, three hundred three".