23193409 has 4 divisors (see below), whose sum is σ = 23204016. Its totient is φ = 23182804.

The previous prime is 23193397. The next prime is 23193421. The reversal of 23193409 is 90439132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (23193397) and next prime (23193421).

It is a cyclic number.

It is not a de Polignac number, because 23193409 - 2⁵ = 23193377 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23193109) 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, 679 + ... + 6844.

It is an arithmetic number, because the mean of its divisors is an integer number (5801004).

Almost surely, 2^23193409 is an apocalyptic number.

It is an amenable number.

23193409 is a deficient number, since it is larger than the sum of its proper divisors (10607).

23193409 is an equidigital number, since it uses as much as digits as its factorization.

23193409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10606.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 23193409 is about 4815.9535919691. The cubic root of 23193409 is about 285.1816181049.

The spelling of 23193409 in words is "twenty-three million, one hundred ninety-three thousand, four hundred nine".