23306081 has 4 divisors (see below), whose sum is σ = 23874564. Its totient is φ = 22737600.

The previous prime is 23306077. The next prime is 23306089. The reversal of 23306081 is 18060332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1915456 + 21390625 = 1384^2 + 4625^2 .

It is a cyclic number.

It is not a de Polignac number, because 23306081 - 2² = 23306077 is a prime.

It is a super-2 number, since 2×23306081² = 1086346823157122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23306089) 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, 284180 + ... + 284261.

It is an arithmetic number, because the mean of its divisors is an integer number (5968641).

Almost surely, 2^23306081 is an apocalyptic number.

It is an amenable number.

23306081 is a deficient number, since it is larger than the sum of its proper divisors (568483).

23306081 is an equidigital number, since it uses as much as digits as its factorization.

23306081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568482.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 23306081 is about 4827.6372067503. The cubic root of 23306081 is about 285.6426699435.

The spelling of 23306081 in words is "twenty-three million, three hundred six thousand, eighty-one".