21023102303 has 8 divisors (see below), whose sum is σ = 24537603072. Its totient is φ = 17636401656.

The previous prime is 21023102297. The next prime is 21023102329. The reversal of 21023102303 is 30320132012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21023102303 - 2⁶ = 21023102239 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 (21023102363) 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, 31949675 + ... + 31950332.

It is an arithmetic number, because the mean of its divisors is an integer number (3067200384).

Almost surely, 2^21023102303 is an apocalyptic number.

21023102303 is a deficient number, since it is larger than the sum of its proper divisors (3514500769).

21023102303 is an equidigital number, since it uses as much as digits as its factorization.

21023102303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63900061.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21023102303 its reverse (30320132012), we get a palindrome (51343234315).

The spelling of 21023102303 in words is "twenty-one billion, twenty-three million, one hundred two thousand, three hundred three".