321233123161 has 2 divisors, whose sum is σ = 321233123162. Its totient is φ = 321233123160.

The previous prime is 321233123117. The next prime is 321233123201. The reversal of 321233123161 is 161321332123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302500000000 + 18733123161 = 550000^2 + 136869^2 .

It is a cyclic number.

It is not a de Polignac number, because 321233123161 - 2⁹ = 321233122649 is a prime.

It is not a weakly prime, because it can be changed into another prime (321233123461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160616561580 + 160616561581.

It is an arithmetic number, because the mean of its divisors is an integer number (160616561581).

Almost surely, 2^321233123161 is an apocalyptic number.

It is an amenable number.

321233123161 is a deficient number, since it is larger than the sum of its proper divisors (1).

321233123161 is an equidigital number, since it uses as much as digits as its factorization.

321233123161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

Adding to 321233123161 its reverse (161321332123), we get a palindrome (482554455284).

The spelling of 321233123161 in words is "three hundred twenty-one billion, two hundred thirty-three million, one hundred twenty-three thousand, one hundred sixty-one".