23213423 has 4 divisors (see below), whose sum is σ = 23559960. Its totient is φ = 22866888.

The previous prime is 23213413. The next prime is 23213429. The reversal of 23213423 is 32431232.

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 23213423 - 2¹² = 23209327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23213395 and 23213404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23213429) 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, 173168 + ... + 173301.

It is an arithmetic number, because the mean of its divisors is an integer number (5889990).

Almost surely, 2^23213423 is an apocalyptic number.

23213423 is a deficient number, since it is larger than the sum of its proper divisors (346537).

23213423 is an equidigital number, since it uses as much as digits as its factorization.

23213423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346536.

The product of its digits is 864, while the sum is 20.

The square root of 23213423 is about 4818.0310293729. The cubic root of 23213423 is about 285.2636239304.

Adding to 23213423 its reverse (32431232), we get a palindrome (55644655).

The spelling of 23213423 in words is "twenty-three million, two hundred thirteen thousand, four hundred twenty-three".