23421071 has 4 divisors (see below), whose sum is σ = 23863032. Its totient is φ = 22979112.

The previous prime is 23421059. The next prime is 23421113. The reversal of 23421071 is 17012432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23421071 - 2¹⁴ = 23404687 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 (23421001) 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, 220901 + ... + 221006.

It is an arithmetic number, because the mean of its divisors is an integer number (5965758).

Almost surely, 2^23421071 is an apocalyptic number.

23421071 is a deficient number, since it is larger than the sum of its proper divisors (441961).

23421071 is an equidigital number, since it uses as much as digits as its factorization.

23421071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441960.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 23421071 is about 4839.5321054829. The cubic root of 23421071 is about 286.1116774160. Note that the first 3 decimals are identical.

The spelling of 23421071 in words is "twenty-three million, four hundred twenty-one thousand, seventy-one".