23623 has 2 divisors, whose sum is σ = 23624. Its totient is φ = 23622.

The previous prime is 23609. The next prime is 23627. The reversal of 23623 is 32632.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23623 is a prime.

It is a super-2 number, since 2×23623² = 1116092258, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 23597 and 23606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11811 + 11812.

It is an arithmetic number, because the mean of its divisors is an integer number (11812).

2²³⁶²³ is an apocalyptic number.

23623 is a deficient number, since it is larger than the sum of its proper divisors (1).

23623 is an equidigital number, since it uses as much as digits as its factorization.

23623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 16.

The square root of 23623 is about 153.6977553512. The cubic root of 23623 is about 28.6931580124.

Subtracting 23623 from its reverse (32632), we obtain a palindrome (9009).

It can be divided in two parts, 23 and 623, that added together give a palindrome (646).

The spelling of 23623 in words is "twenty-three thousand, six hundred twenty-three".