23013021 has 8 divisors (see below), whose sum is σ = 30723264. Its totient is φ = 15322400.

The previous prime is 23013007. The next prime is 23013059. The reversal of 23013021 is 12031032.

It is a happy number.

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 23013021 - 2¹⁰ = 23011997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23012988 and 23013006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23013521) 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, 1905 + ... + 7046.

It is an arithmetic number, because the mean of its divisors is an integer number (3840408).

Almost surely, 2^23013021 is an apocalyptic number.

It is an amenable number.

23013021 is a deficient number, since it is larger than the sum of its proper divisors (7710243).

23013021 is an equidigital number, since it uses as much as digits as its factorization.

23013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9811.

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

The square root of 23013021 is about 4797.1888643246. The cubic root of 23013021 is about 284.4403545159.

Adding to 23013021 its reverse (12031032), we get a palindrome (35044053).

The spelling of 23013021 in words is "twenty-three million, thirteen thousand, twenty-one".