23381329 has 4 divisors (see below), whose sum is σ = 23549680. Its totient is φ = 23212980.

The previous prime is 23381297. The next prime is 23381333. The reversal of 23381329 is 92318332.

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.

It is a cyclic number.

It is not a de Polignac number, because 23381329 - 2⁵ = 23381297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23381329.

It is not an unprimeable number, because it can be changed into a prime (23381359) 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, 83967 + ... + 84244.

It is an arithmetic number, because the mean of its divisors is an integer number (5887420).

Almost surely, 2^23381329 is an apocalyptic number.

It is an amenable number.

23381329 is a deficient number, since it is larger than the sum of its proper divisors (168351).

23381329 is a wasteful number, since it uses less digits than its factorization.

23381329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168350.

The product of its digits is 7776, while the sum is 31.

The square root of 23381329 is about 4835.4243867524. The cubic root of 23381329 is about 285.9497564436.

The spelling of 23381329 in words is "twenty-three million, three hundred eighty-one thousand, three hundred twenty-nine".