213493535 has 4 divisors (see below), whose sum is σ = 256192248. Its totient is φ = 170794824.

The previous prime is 213493517. The next prime is 213493543. The reversal of 213493535 is 535394312.

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

It is a cyclic number.

It is not a de Polignac number, because 213493535 - 2¹⁴ = 213477151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213493495 and 213493504.

It is a congruent number.

It is an unprimeable number.

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, 21349349 + ... + 21349358.

It is an arithmetic number, because the mean of its divisors is an integer number (64048062).

Almost surely, 2^213493535 is an apocalyptic number.

213493535 is a deficient number, since it is larger than the sum of its proper divisors (42698713).

213493535 is an equidigital number, since it uses as much as digits as its factorization.

213493535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42698712.

The product of its digits is 48600, while the sum is 35.

The square root of 213493535 is about 14611.4179667820. The cubic root of 213493535 is about 597.6701638901.

The spelling of 213493535 in words is "two hundred thirteen million, four hundred ninety-three thousand, five hundred thirty-five".