213052135 has 4 divisors (see below), whose sum is σ = 255662568. Its totient is φ = 170441704.

The previous prime is 213052129. The next prime is 213052139. The reversal of 213052135 is 531250312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213052135 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 (213052139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21305209 + ... + 21305218.

It is an arithmetic number, because the mean of its divisors is an integer number (63915642).

Almost surely, 2^213052135 is an apocalyptic number.

213052135 is a deficient number, since it is larger than the sum of its proper divisors (42610433).

213052135 is an equidigital number, since it uses as much as digits as its factorization.

213052135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42610432.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 213052135 is about 14596.3055257144. The cubic root of 213052135 is about 597.2579833675.

The spelling of 213052135 in words is "two hundred thirteen million, fifty-two thousand, one hundred thirty-five".