213342337 has 4 divisors (see below), whose sum is σ = 229753300. Its totient is φ = 196931376.

The previous prime is 213342329. The next prime is 213342359. The reversal of 213342337 is 733243312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12383361 + 200958976 = 3519^2 + 14176^2 .

It is a cyclic number.

It is not a de Polignac number, because 213342337 - 2³ = 213342329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213342637) 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 3 ways as a sum of consecutive naturals, for example, 8205462 + ... + 8205487.

It is an arithmetic number, because the mean of its divisors is an integer number (57438325).

Almost surely, 2^213342337 is an apocalyptic number.

It is an amenable number.

213342337 is a deficient number, since it is larger than the sum of its proper divisors (16410963).

213342337 is a wasteful number, since it uses less digits than its factorization.

213342337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16410962.

The product of its digits is 9072, while the sum is 28.

The square root of 213342337 is about 14606.2430830108. The cubic root of 213342337 is about 597.5290388132.

Adding to 213342337 its reverse (733243312), we get a palindrome (946585649).

The spelling of 213342337 in words is "two hundred thirteen million, three hundred forty-two thousand, three hundred thirty-seven".