210234161 has 2 divisors, whose sum is σ = 210234162. Its totient is φ = 210234160.

The previous prime is 210234139. The next prime is 210234163. The reversal of 210234161 is 161432012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130667761 + 79566400 = 11431^2 + 8920^2 .

It is a cyclic number.

It is not a de Polignac number, because 210234161 - 2¹⁰ = 210233137 is a prime.

Together with 210234163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210234163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105117080 + 105117081.

It is an arithmetic number, because the mean of its divisors is an integer number (105117081).

Almost surely, 2^210234161 is an apocalyptic number.

It is an amenable number.

210234161 is a deficient number, since it is larger than the sum of its proper divisors (1).

210234161 is an equidigital number, since it uses as much as digits as its factorization.

210234161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 210234161 is about 14499.4538172995. The cubic root of 210234161 is about 594.6130393566.

Adding to 210234161 its reverse (161432012), we get a palindrome (371666173).

It can be divided in two parts, 2102 and 34161, that added together give a palindrome (36263).

The spelling of 210234161 in words is "two hundred ten million, two hundred thirty-four thousand, one hundred sixty-one".