23343891 has 4 divisors (see below), whose sum is σ = 31125192. Its totient is φ = 15562592.

The previous prime is 23343809. The next prime is 23343911. The reversal of 23343891 is 19834332.

It is a happy number.

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 23343891 - 2⁹ = 23343379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23343491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3890646 + ... + 3890651.

It is an arithmetic number, because the mean of its divisors is an integer number (7781298).

Almost surely, 2^23343891 is an apocalyptic number.

23343891 is a deficient number, since it is larger than the sum of its proper divisors (7781301).

23343891 is an equidigital number, since it uses as much as digits as its factorization.

23343891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7781300.

The product of its digits is 15552, while the sum is 33.

The square root of 23343891 is about 4831.5516141298. The cubic root of 23343891 is about 285.7970547464.

The spelling of 23343891 in words is "twenty-three million, three hundred forty-three thousand, eight hundred ninety-one".