20001231332323 has 2 divisors, whose sum is σ = 20001231332324. Its totient is φ = 20001231332322.

The previous prime is 20001231332279. The next prime is 20001231332353. The reversal of 20001231332323 is 32323313210002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001231332323 is a prime.

It is not a weakly prime, because it can be changed into another prime (20001231332353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000615666161 + 10000615666162.

It is an arithmetic number, because the mean of its divisors is an integer number (10000615666162).

Almost surely, 2^{20001231332323} is an apocalyptic number.

20001231332323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001231332323 is an equidigital number, since it uses as much as digits as its factorization.

20001231332323 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 25.

Adding to 20001231332323 its reverse (32323313210002), we get a palindrome (52324544542325).

The spelling of 20001231332323 in words is "twenty trillion, one billion, two hundred thirty-one million, three hundred thirty-two thousand, three hundred twenty-three".