312002232320161 has 2 divisors, whose sum is σ = 312002232320162. Its totient is φ = 312002232320160.

The previous prime is 312002232320159. The next prime is 312002232320179. The reversal of 312002232320161 is 161023232200213.

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., 284542075140625 + 27460157179536 = 16868375^2 + 5240244^2 .

It is a cyclic number.

It is not a de Polignac number, because 312002232320161 - 2¹ = 312002232320159 is a prime.

Together with 312002232320159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (312002232320761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156001116160080 + 156001116160081.

It is an arithmetic number, because the mean of its divisors is an integer number (156001116160081).

Almost surely, 2^{312002232320161} is an apocalyptic number.

It is an amenable number.

312002232320161 is a deficient number, since it is larger than the sum of its proper divisors (1).

312002232320161 is an equidigital number, since it uses as much as digits as its factorization.

312002232320161 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 312002232320161 its reverse (161023232200213), we get a palindrome (473025464520374).

The spelling of 312002232320161 in words is "three hundred twelve trillion, two billion, two hundred thirty-two million, three hundred twenty thousand, one hundred sixty-one".