23809081 has 4 divisors (see below), whose sum is σ = 23858064. Its totient is φ = 23760100.

The previous prime is 23809067. The next prime is 23809091. The reversal of 23809081 is 18090832.

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 23809081 - 2¹¹ = 23807033 is a prime.

It is a super-2 number, since 2×23809081² = 1133744676129122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23809001) 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, 23755 + ... + 24736.

It is an arithmetic number, because the mean of its divisors is an integer number (5964516).

Almost surely, 2^23809081 is an apocalyptic number.

It is an amenable number.

23809081 is a deficient number, since it is larger than the sum of its proper divisors (48983).

23809081 is an equidigital number, since it uses as much as digits as its factorization.

23809081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48982.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 23809081 is about 4879.4549900578. The cubic root of 23809081 is about 287.6830078674.

It can be divided in two parts, 2 and 3809081, that added together give a palindrome (3809083).

The spelling of 23809081 in words is "twenty-three million, eight hundred nine thousand, eighty-one".