23213843 has 4 divisors (see below), whose sum is σ = 23310408. Its totient is φ = 23117280.

The previous prime is 23213821. The next prime is 23213849. The reversal of 23213843 is 34831232.

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 23213843 - 2⁶ = 23213779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23213849) 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, 47921 + ... + 48402.

It is an arithmetic number, because the mean of its divisors is an integer number (5827602).

Almost surely, 2^23213843 is an apocalyptic number.

23213843 is a deficient number, since it is larger than the sum of its proper divisors (96565).

23213843 is an equidigital number, since it uses as much as digits as its factorization.

23213843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96564.

The product of its digits is 3456, while the sum is 26.

The square root of 23213843 is about 4818.0746154455. The cubic root of 23213843 is about 285.2653443431.

The spelling of 23213843 in words is "twenty-three million, two hundred thirteen thousand, eight hundred forty-three".