23043691 has 8 divisors (see below), whose sum is σ = 25483824. Its totient is φ = 20661120.

The previous prime is 23043673. The next prime is 23043703. The reversal of 23043691 is 19634032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23043691 - 2⁵ = 23043659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23043491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13546 + ... + 15151.

It is an arithmetic number, because the mean of its divisors is an integer number (3185478).

Almost surely, 2^23043691 is an apocalyptic number.

23043691 is a deficient number, since it is larger than the sum of its proper divisors (2440133).

23043691 is a wasteful number, since it uses less digits than its factorization.

23043691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28781.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 23043691 is about 4800.3844637695. The cubic root of 23043691 is about 284.5666585631.

It can be divided in two parts, 2304 and 3691, that added together give a palindrome (5995).

The spelling of 23043691 in words is "twenty-three million, forty-three thousand, six hundred ninety-one".