23213623 has 2 divisors, whose sum is σ = 23213624. Its totient is φ = 23213622.

The previous prime is 23213599. The next prime is 23213639. The reversal of 23213623 is 32631232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23213623 - 2⁵ = 23213591 is a prime.

It is a super-2 number, since 2×23213623² = 1077744585572258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23213594 and 23213603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23210623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11606811 + 11606812.

It is an arithmetic number, because the mean of its divisors is an integer number (11606812).

Almost surely, 2^23213623 is an apocalyptic number.

23213623 is a deficient number, since it is larger than the sum of its proper divisors (1).

23213623 is an equidigital number, since it uses as much as digits as its factorization.

23213623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 22.

The square root of 23213623 is about 4818.0517846947. The cubic root of 23213623 is about 285.2644431771.

Adding to 23213623 its reverse (32631232), we get a palindrome (55844855).

It can be divided in two parts, 2 and 3213623, that multiplied together give a palindrome (6427246).

The spelling of 23213623 in words is "twenty-three million, two hundred thirteen thousand, six hundred twenty-three".