21000303023 has 8 divisors (see below), whose sum is σ = 24033364992. Its totient is φ = 17975495736.

The previous prime is 21000303007. The next prime is 21000303041. The reversal of 21000303023 is 32030300012.

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 21000303023 - 2⁴ = 21000303007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21000302989 and 21000303007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000303323) 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, 2058215 + ... + 2068392.

It is an arithmetic number, because the mean of its divisors is an integer number (3004170624).

Almost surely, 2^21000303023 is an apocalyptic number.

21000303023 is a deficient number, since it is larger than the sum of its proper divisors (3033061969).

21000303023 is an equidigital number, since it uses as much as digits as its factorization.

21000303023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127341.

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 21000303023 its reverse (32030300012), we get a palindrome (53030603035).

The spelling of 21000303023 in words is "twenty-one billion, three hundred three thousand, twenty-three".