23171001823 has 2 divisors, whose sum is σ = 23171001824. Its totient is φ = 23171001822.

The previous prime is 23171001713. The next prime is 23171001881. The reversal of 23171001823 is 32810017132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23171001823 - 2⁹ = 23171001311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23171001791 and 23171001800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23171001223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11585500911 + 11585500912.

It is an arithmetic number, because the mean of its divisors is an integer number (11585500912).

Almost surely, 2^23171001823 is an apocalyptic number.

23171001823 is a deficient number, since it is larger than the sum of its proper divisors (1).

23171001823 is an equidigital number, since it uses as much as digits as its factorization.

23171001823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

Adding to 23171001823 its reverse (32810017132), we get a palindrome (55981018955).

The spelling of 23171001823 in words is "twenty-three billion, one hundred seventy-one million, one thousand, eight hundred twenty-three".