23012421 has 4 divisors (see below), whose sum is σ = 30683232. Its totient is φ = 15341612.

The previous prime is 23012411. The next prime is 23012453. The reversal of 23012421 is 12421032.

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 a cyclic number.

It is not a de Polignac number, because 23012421 - 2⁹ = 23011909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23012421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012411) 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, 3835401 + ... + 3835406.

It is an arithmetic number, because the mean of its divisors is an integer number (7670808).

Almost surely, 2^23012421 is an apocalyptic number.

It is an amenable number.

23012421 is a deficient number, since it is larger than the sum of its proper divisors (7670811).

23012421 is an equidigital number, since it uses as much as digits as its factorization.

23012421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670810.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 23012421 is about 4797.1263272922. The cubic root of 23012421 is about 284.4378824995.

Adding to 23012421 its reverse (12421032), we get a palindrome (35433453).

The spelling of 23012421 in words is "twenty-three million, twelve thousand, four hundred twenty-one".