23281723 has 2 divisors, whose sum is σ = 23281724. Its totient is φ = 23281722.

The previous prime is 23281717. The next prime is 23281733. The reversal of 23281723 is 32718232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23281723 - 2²¹ = 21184571 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23281691 and 23281700.

It is not a weakly prime, because it can be changed into another prime (23281733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11640861 + 11640862.

It is an arithmetic number, because the mean of its divisors is an integer number (11640862).

Almost surely, 2^23281723 is an apocalyptic number.

23281723 is a deficient number, since it is larger than the sum of its proper divisors (1).

23281723 is an equidigital number, since it uses as much as digits as its factorization.

23281723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 23281723 is about 4825.1137810419. The cubic root of 23281723 is about 285.5431235423.

Adding to 23281723 its reverse (32718232), we get a palindrome (55999955).

The spelling of 23281723 in words is "twenty-three million, two hundred eighty-one thousand, seven hundred twenty-three".