23383821 has 4 divisors (see below), whose sum is σ = 31178432. Its totient is φ = 15589212.

The previous prime is 23383819. The next prime is 23383837. The reversal of 23383821 is 12838332.

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 not a de Polignac number, because 23383821 - 2¹ = 23383819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23383861) 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, 3897301 + ... + 3897306.

It is an arithmetic number, because the mean of its divisors is an integer number (7794608).

Almost surely, 2^23383821 is an apocalyptic number.

It is an amenable number.

23383821 is a deficient number, since it is larger than the sum of its proper divisors (7794611).

23383821 is an equidigital number, since it uses as much as digits as its factorization.

23383821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7794610.

The product of its digits is 6912, while the sum is 30.

The square root of 23383821 is about 4835.6820615090. The cubic root of 23383821 is about 285.9599149976.

The spelling of 23383821 in words is "twenty-three million, three hundred eighty-three thousand, eight hundred twenty-one".