20331312123233 has 2 divisors, whose sum is σ = 20331312123234. Its totient is φ = 20331312123232.

The previous prime is 20331312123191. The next prime is 20331312123289. The reversal of 20331312123233 is 33232121313302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12377400531409 + 7953911591824 = 3518153^2 + 2820268^2 .

It is a cyclic number.

It is not a de Polignac number, because 20331312123233 - 2²⁴ = 20331295346017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20331312123196 and 20331312123205.

It is not a weakly prime, because it can be changed into another prime (20331312125233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165656061616 + 10165656061617.

It is an arithmetic number, because the mean of its divisors is an integer number (10165656061617).

Almost surely, 2^{20331312123233} is an apocalyptic number.

It is an amenable number.

20331312123233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331312123233 is an equidigital number, since it uses as much as digits as its factorization.

20331312123233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 20331312123233 its reverse (33232121313302), we get a palindrome (53563433436535).

The spelling of 20331312123233 in words is "twenty trillion, three hundred thirty-one billion, three hundred twelve million, one hundred twenty-three thousand, two hundred thirty-three".