23653109 has 4 divisors (see below), whose sum is σ = 23870220. Its totient is φ = 23436000.

The previous prime is 23653073. The next prime is 23653111. The reversal of 23653109 is 90135632.

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 8614225 + 15038884 = 2935^2 + 3878^2 .

It is a cyclic number.

It is not a de Polignac number, because 23653109 - 2¹⁶ = 23587573 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 (23653129) 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, 108392 + ... + 108609.

It is an arithmetic number, because the mean of its divisors is an integer number (5967555).

Almost surely, 2^23653109 is an apocalyptic number.

It is an amenable number.

23653109 is a deficient number, since it is larger than the sum of its proper divisors (217111).

23653109 is a wasteful number, since it uses less digits than its factorization.

23653109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217110.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 23653109 is about 4863.4462061382. The cubic root of 23653109 is about 287.0534324874.

The spelling of 23653109 in words is "twenty-three million, six hundred fifty-three thousand, one hundred nine".