23303203021 has 4 divisors (see below), whose sum is σ = 26632232032. Its totient is φ = 19974174012.

The previous prime is 23303202971. The next prime is 23303203039. The reversal of 23303203021 is 12030230332.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23303203021 - 2⁹ = 23303202509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23303203021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23303203061) 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, 1664514495 + ... + 1664514508.

It is an arithmetic number, because the mean of its divisors is an integer number (6658058008).

Almost surely, 2^23303203021 is an apocalyptic number.

It is an amenable number.

23303203021 is a deficient number, since it is larger than the sum of its proper divisors (3329029011).

23303203021 is an equidigital number, since it uses as much as digits as its factorization.

23303203021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329029010.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 23303203021 its reverse (12030230332), we get a palindrome (35333433353).

The spelling of 23303203021 in words is "twenty-three billion, three hundred three million, two hundred three thousand, twenty-one".