23287823 has 4 divisors (see below), whose sum is σ = 25079208. Its totient is φ = 21496440.

The previous prime is 23287813. The next prime is 23287867. The reversal of 23287823 is 32878232.

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

It is a cyclic number.

It is not a de Polignac number, because 23287823 - 2¹⁸ = 23025679 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 (23287813) 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, 895673 + ... + 895698.

It is an arithmetic number, because the mean of its divisors is an integer number (6269802).

Almost surely, 2^23287823 is an apocalyptic number.

23287823 is a deficient number, since it is larger than the sum of its proper divisors (1791385).

23287823 is a wasteful number, since it uses less digits than its factorization.

23287823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791384.

The product of its digits is 32256, while the sum is 35.

The square root of 23287823 is about 4825.7458490890. The cubic root of 23287823 is about 285.5680595683.

The spelling of 23287823 in words is "twenty-three million, two hundred eighty-seven thousand, eight hundred twenty-three".