202310161 has 2 divisors, whose sum is σ = 202310162. Its totient is φ = 202310160.

The previous prime is 202310159. The next prime is 202310189. The reversal of 202310161 is 161013202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202208400 + 101761 = 14220^2 + 319^2 .

It is a cyclic number.

It is not a de Polignac number, because 202310161 - 2¹ = 202310159 is a prime.

Together with 202310159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (202310131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101155080 + 101155081.

It is an arithmetic number, because the mean of its divisors is an integer number (101155081).

Almost surely, 2^202310161 is an apocalyptic number.

It is an amenable number.

202310161 is a deficient number, since it is larger than the sum of its proper divisors (1).

202310161 is an equidigital number, since it uses as much as digits as its factorization.

202310161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 202310161 is about 14223.5776441794. The cubic root of 202310161 is about 587.0465839725.

Adding to 202310161 its reverse (161013202), we get a palindrome (363323363).

The spelling of 202310161 in words is "two hundred two million, three hundred ten thousand, one hundred sixty-one".