210136135 has 32 divisors (see below), whose sum is σ = 291723264. Its totient is φ = 143856000.

The previous prime is 210136127. The next prime is 210136139. The reversal of 210136135 is 531631012.

It is a happy number.

It is not a de Polignac number, because 210136135 - 2³ = 210136127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210136139) 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 in 31 ways as a sum of consecutive naturals, for example, 61420 + ... + 64750.

It is an arithmetic number, because the mean of its divisors is an integer number (9116352).

Almost surely, 2^210136135 is an apocalyptic number.

210136135 is a deficient number, since it is larger than the sum of its proper divisors (81587129).

210136135 is a wasteful number, since it uses less digits than its factorization.

210136135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 210136135 is about 14496.0730889438. The cubic root of 210136135 is about 594.5206081375.

Adding to 210136135 its reverse (531631012), we get a palindrome (741767147).

The spelling of 210136135 in words is "two hundred ten million, one hundred thirty-six thousand, one hundred thirty-five".