23381243 has 4 divisors (see below), whose sum is σ = 23701608. Its totient is φ = 23060880.

The previous prime is 23381233. The next prime is 23381249. The reversal of 23381243 is 34218332.

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 23381243 - 2¹² = 23377147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23381249) 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, 160073 + ... + 160218.

It is an arithmetic number, because the mean of its divisors is an integer number (5925402).

Almost surely, 2^23381243 is an apocalyptic number.

23381243 is a deficient number, since it is larger than the sum of its proper divisors (320365).

23381243 is an equidigital number, since it uses as much as digits as its factorization.

23381243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320364.

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

The square root of 23381243 is about 4835.4154940398. The cubic root of 23381243 is about 285.9494058546.

Adding to 23381243 its reverse (34218332), we get a palindrome (57599575).

The spelling of 23381243 in words is "twenty-three million, three hundred eighty-one thousand, two hundred forty-three".