23043661 has 8 divisors (see below), whose sum is σ = 23892120. Its totient is φ = 22198848.

The previous prime is 23043659. The next prime is 23043667. The reversal of 23043661 is 16634032.

It can be written as a sum of positive squares in 4 ways, for example, as 7322436 + 15721225 = 2706^2 + 3965^2 .

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 23043661 - 2¹ = 23043659 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 (23043667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22615 + ... + 23611.

It is an arithmetic number, because the mean of its divisors is an integer number (2986515).

Almost surely, 2^23043661 is an apocalyptic number.

It is an amenable number.

23043661 is a deficient number, since it is larger than the sum of its proper divisors (848459).

23043661 is an equidigital number, since it uses as much as digits as its factorization.

23043661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 23043661 is about 4800.3813390188. The cubic root of 23043661 is about 284.5665350730.

Adding to 23043661 its reverse (16634032), we get a palindrome (39677693).

The spelling of 23043661 in words is "twenty-three million, forty-three thousand, six hundred sixty-one".