123323131321321 has 2 divisors, whose sum is σ = 123323131321322. Its totient is φ = 123323131321320.

The previous prime is 123323131321309. The next prime is 123323131321331. The reversal of 123323131321321 is 123123131323321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120627167641600 + 2695963679721 = 10983040^2 + 1641939^2 .

It is a cyclic number.

It is not a de Polignac number, because 123323131321321 - 2⁵ = 123323131321289 is a prime.

It is not a weakly prime, because it can be changed into another prime (123323131321301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61661565660660 + 61661565660661.

It is an arithmetic number, because the mean of its divisors is an integer number (61661565660661).

Almost surely, 2^{123323131321321} is an apocalyptic number.

It is an amenable number.

123323131321321 is a deficient number, since it is larger than the sum of its proper divisors (1).

123323131321321 is an equidigital number, since it uses as much as digits as its factorization.

123323131321321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 31.

Adding to 123323131321321 its reverse (123123131323321), we get a palindrome (246446262644642).

The spelling of 123323131321321 in words is "one hundred twenty-three trillion, three hundred twenty-three billion, one hundred thirty-one million, three hundred twenty-one thousand, three hundred twenty-one".