23030010021 has 4 divisors (see below), whose sum is σ = 30706680032. Its totient is φ = 15353340012.

The previous prime is 23030010013. The next prime is 23030010049. The reversal of 23030010021 is 12001003032.

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 not a de Polignac number, because 23030010021 - 2³ = 23030010013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23030009979 and 23030010006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23030010071) 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, 3838335001 + ... + 3838335006.

It is an arithmetic number, because the mean of its divisors is an integer number (7676670008).

Almost surely, 2^23030010021 is an apocalyptic number.

It is an amenable number.

23030010021 is a deficient number, since it is larger than the sum of its proper divisors (7676670011).

23030010021 is an equidigital number, since it uses as much as digits as its factorization.

23030010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7676670010.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 23030010021 its reverse (12001003032), we get a palindrome (35031013053).

The spelling of 23030010021 in words is "twenty-three billion, thirty million, ten thousand, twenty-one".