210135071 has 2 divisors, whose sum is σ = 210135072. Its totient is φ = 210135070.

The previous prime is 210135067. The next prime is 210135083. The reversal of 210135071 is 170531012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210135071 - 2² = 210135067 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210135671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105067535 + 105067536.

It is an arithmetic number, because the mean of its divisors is an integer number (105067536).

Almost surely, 2^210135071 is an apocalyptic number.

210135071 is a deficient number, since it is larger than the sum of its proper divisors (1).

210135071 is an equidigital number, since it uses as much as digits as its factorization.

210135071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 210135071 is about 14496.0363893031. The cubic root of 210135071 is about 594.5196047070.

Adding to 210135071 its reverse (170531012), we get a palindrome (380666083).

The spelling of 210135071 in words is "two hundred ten million, one hundred thirty-five thousand, seventy-one".