213442835 has 4 divisors (see below), whose sum is σ = 256131408. Its totient is φ = 170754264.

The previous prime is 213442811. The next prime is 213442861. The reversal of 213442835 is 538244312.

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 213442835 - 2²² = 209248531 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21344279 + ... + 21344288.

It is an arithmetic number, because the mean of its divisors is an integer number (64032852).

Almost surely, 2^213442835 is an apocalyptic number.

213442835 is a deficient number, since it is larger than the sum of its proper divisors (42688573).

213442835 is an equidigital number, since it uses as much as digits as its factorization.

213442835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42688572.

The product of its digits is 23040, while the sum is 32.

The square root of 213442835 is about 14609.6829192149. The cubic root of 213442835 is about 597.6228489893.

The spelling of 213442835 in words is "two hundred thirteen million, four hundred forty-two thousand, eight hundred thirty-five".