23123304161 has 2 divisors, whose sum is σ = 23123304162. Its totient is φ = 23123304160.

The previous prime is 23123304157. The next prime is 23123304277. The reversal of 23123304161 is 16140332132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18773110225 + 4350193936 = 137015^2 + 65956^2 .

It is a cyclic number.

It is not a de Polignac number, because 23123304161 - 2² = 23123304157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23123304161.

It is not a weakly prime, because it can be changed into another prime (23123304101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11561652080 + 11561652081.

It is an arithmetic number, because the mean of its divisors is an integer number (11561652081).

Almost surely, 2^23123304161 is an apocalyptic number.

It is an amenable number.

23123304161 is a deficient number, since it is larger than the sum of its proper divisors (1).

23123304161 is an equidigital number, since it uses as much as digits as its factorization.

23123304161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 23123304161 its reverse (16140332132), we get a palindrome (39263636293).

The spelling of 23123304161 in words is "twenty-three billion, one hundred twenty-three million, three hundred four thousand, one hundred sixty-one".