21230230023 has 12 divisors (see below), whose sum is σ = 30837207960. Its totient is φ = 14074415856.

The previous prime is 21230230009. The next prime is 21230230033. The reversal of 21230230023 is 32003203212.

It is a happy number.

It is not a de Polignac number, because 21230230023 - 2⁶ = 21230229959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21230229978 and 21230230005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230230033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6587536 + ... + 6590757.

It is an arithmetic number, because the mean of its divisors is an integer number (2569767330).

Almost surely, 2^21230230023 is an apocalyptic number.

21230230023 is a deficient number, since it is larger than the sum of its proper divisors (9606977937).

21230230023 is a wasteful number, since it uses less digits than its factorization.

21230230023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13178478 (or 13178475 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21230230023 its reverse (32003203212), we get a palindrome (53233433235).

The spelling of 21230230023 in words is "twenty-one billion, two hundred thirty million, two hundred thirty thousand, twenty-three".