21023343303 has 8 divisors (see below), whose sum is σ = 28120681968. Its totient is φ = 13970783424.

The previous prime is 21023343293. The next prime is 21023343329. The reversal of 21023343303 is 30334332012.

It is a happy number.

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

It is not a de Polignac number, because 21023343303 - 2⁶ = 21023343239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023343373) 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 7 ways as a sum of consecutive naturals, for example, 11193600 + ... + 11195477.

It is an arithmetic number, because the mean of its divisors is an integer number (3515085246).

Almost surely, 2^21023343303 is an apocalyptic number.

21023343303 is a deficient number, since it is larger than the sum of its proper divisors (7097338665).

21023343303 is a wasteful number, since it uses less digits than its factorization.

21023343303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22389393.

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 21023343303 its reverse (30334332012), we get a palindrome (51357675315).

The spelling of 21023343303 in words is "twenty-one billion, twenty-three million, three hundred forty-three thousand, three hundred three".