23243491 has 4 divisors (see below), whose sum is σ = 23253592. Its totient is φ = 23233392.

The previous prime is 23243489. The next prime is 23243497. The reversal of 23243491 is 19434232.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23243491 - 2¹ = 23243489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23243497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271 + ... + 6823.

It is an arithmetic number, because the mean of its divisors is an integer number (5813398).

Almost surely, 2^23243491 is an apocalyptic number.

23243491 is a deficient number, since it is larger than the sum of its proper divisors (10101).

23243491 is an equidigital number, since it uses as much as digits as its factorization.

23243491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100.

The product of its digits is 5184, while the sum is 28.

The square root of 23243491 is about 4821.1503813924. The cubic root of 23243491 is about 285.3867366938.

The spelling of 23243491 in words is "twenty-three million, two hundred forty-three thousand, four hundred ninety-one".