231322302002161 has 2 divisors, whose sum is σ = 231322302002162. Its totient is φ = 231322302002160.

The previous prime is 231322302002111. The next prime is 231322302002321. The reversal of 231322302002161 is 161200203223132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168716718810000 + 62605583192161 = 12989100^2 + 7912369^2 .

It is a cyclic number.

It is not a de Polignac number, because 231322302002161 - 2¹⁹ = 231322301477873 is a prime.

It is not a weakly prime, because it can be changed into another prime (231322302002111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661151001080 + 115661151001081.

It is an arithmetic number, because the mean of its divisors is an integer number (115661151001081).

Almost surely, 2^{231322302002161} is an apocalyptic number.

It is an amenable number.

231322302002161 is a deficient number, since it is larger than the sum of its proper divisors (1).

231322302002161 is an equidigital number, since it uses as much as digits as its factorization.

231322302002161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 231322302002161 its reverse (161200203223132), we get a palindrome (392522505225293).

The spelling of 231322302002161 in words is "two hundred thirty-one trillion, three hundred twenty-two billion, three hundred two million, two thousand, one hundred sixty-one".