20123023032191 has 2 divisors, whose sum is σ = 20123023032192. Its totient is φ = 20123023032190.

The previous prime is 20123023032181. The next prime is 20123023032227. The reversal of 20123023032191 is 19123032032102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20123023032191 - 2³⁰ = 20121949290367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123023032121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061511516095 + 10061511516096.

It is an arithmetic number, because the mean of its divisors is an integer number (10061511516096).

Almost surely, 2^{20123023032191} is an apocalyptic number.

20123023032191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123023032191 is an equidigital number, since it uses as much as digits as its factorization.

20123023032191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

Adding to 20123023032191 its reverse (19123032032102), we get a palindrome (39246055064293).

The spelling of 20123023032191 in words is "twenty trillion, one hundred twenty-three billion, twenty-three million, thirty-two thousand, one hundred ninety-one".