23213123 has 8 divisors (see below), whose sum is σ = 23897280. Its totient is φ = 22538880.

The previous prime is 23213087. The next prime is 23213131. The reversal of 23213123 is 32131232.

It is a Cunningham number, because it is equal to 4818²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23213123 - 2⁶ = 23213059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23213153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2411 + ... + 7227.

It is an arithmetic number, because the mean of its divisors is an integer number (2987160).

Almost surely, 2^23213123 is an apocalyptic number.

23213123 is a deficient number, since it is larger than the sum of its proper divisors (684157).

23213123 is an equidigital number, since it uses as much as digits as its factorization.

23213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4957.

The product of its digits is 216, while the sum is 17.

The square root of 23213123 is about 4817.9998962225. Note that the first 3 decimals coincide. The cubic root of 23213123 is about 285.2623950516.

Adding to 23213123 its reverse (32131232), we get a palindrome (55344355).

It can be divided in two parts, 2 and 3213123, that multiplied together give a palindrome (6426246).

The spelling of 23213123 in words is "twenty-three million, two hundred thirteen thousand, one hundred twenty-three".