20001001303 has 4 divisors (see below), whose sum is σ = 20001462880. Its totient is φ = 20000539728.

The previous prime is 20001001291. The next prime is 20001001351. The reversal of 20001001303 is 30310010002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30310010002 = 2 ⋅15155005001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001001303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20001001303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001001703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158175 + ... + 254992.

It is an arithmetic number, because the mean of its divisors is an integer number (5000365720).

Almost surely, 2^20001001303 is an apocalyptic number.

20001001303 is a deficient number, since it is larger than the sum of its proper divisors (461577).

20001001303 is an equidigital number, since it uses as much as digits as its factorization.

20001001303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461576.

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 20001001303 its reverse (30310010002), we get a palindrome (50311011305).

The spelling of 20001001303 in words is "twenty billion, one million, one thousand, three hundred three".