213240415 has 16 divisors (see below), whose sum is σ = 258293376. Its totient is φ = 168998400.

The previous prime is 213240409. The next prime is 213240437. The reversal of 213240415 is 514042312.

It is not a de Polignac number, because 213240415 - 2⁹ = 213239903 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 326229 + ... + 326881.

It is an arithmetic number, because the mean of its divisors is an integer number (16143336).

Almost surely, 2^213240415 is an apocalyptic number.

213240415 is a deficient number, since it is larger than the sum of its proper divisors (45052961).

213240415 is a wasteful number, since it uses less digits than its factorization.

213240415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 213240415 is about 14602.7536786731. The cubic root of 213240415 is about 597.4338693055.

Adding to 213240415 its reverse (514042312), we get a palindrome (727282727).

The spelling of 213240415 in words is "two hundred thirteen million, two hundred forty thousand, four hundred fifteen".