23415823 has 4 divisors (see below), whose sum is σ = 23914080. Its totient is φ = 22917568.

The previous prime is 23415803. The next prime is 23415829. The reversal of 23415823 is 32851432.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23415823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23415791 and 23415800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23415829) 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, 249058 + ... + 249151.

It is an arithmetic number, because the mean of its divisors is an integer number (5978520).

Almost surely, 2^23415823 is an apocalyptic number.

23415823 is a deficient number, since it is larger than the sum of its proper divisors (498257).

23415823 is an equidigital number, since it uses as much as digits as its factorization.

23415823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498256.

The product of its digits is 5760, while the sum is 28.

The square root of 23415823 is about 4838.9898739303. The cubic root of 23415823 is about 286.0903059731.

The spelling of 23415823 in words is "twenty-three million, four hundred fifteen thousand, eight hundred twenty-three".