23421013 has 8 divisors (see below), whose sum is σ = 29200320. Its totient is φ = 18250080.

The previous prime is 23421001. The next prime is 23421017. The reversal of 23421013 is 31012432.

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 a de Polignac number, because none of the positive numbers 2^k-23421013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152008 + ... + 152161.

It is an arithmetic number, because the mean of its divisors is an integer number (3650040).

Almost surely, 2^23421013 is an apocalyptic number.

It is an amenable number.

23421013 is a deficient number, since it is larger than the sum of its proper divisors (5779307).

23421013 is a wasteful number, since it uses less digits than its factorization.

23421013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304187.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 23421013 is about 4839.5261131644. The cubic root of 23421013 is about 286.1114412399. Note that the first 3 decimals are identical.

Adding to 23421013 its reverse (31012432), we get a palindrome (54433445).

The spelling of 23421013 in words is "twenty-three million, four hundred twenty-one thousand, thirteen".