213603215 has 32 divisors (see below), whose sum is σ = 313455744. Its totient is φ = 136396800.

The previous prime is 213603193. The next prime is 213603223. The reversal of 213603215 is 512306312.

It is not a de Polignac number, because 213603215 - 2¹² = 213599119 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 55865 + ... + 59565.

It is an arithmetic number, because the mean of its divisors is an integer number (9795492).

Almost surely, 2^213603215 is an apocalyptic number.

213603215 is a deficient number, since it is larger than the sum of its proper divisors (99852529).

213603215 is a wasteful number, since it uses less digits than its factorization.

213603215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 213603215 is about 14615.1707140218. The cubic root of 213603215 is about 597.7724952342.

Adding to 213603215 its reverse (512306312), we get a palindrome (725909527).

The spelling of 213603215 in words is "two hundred thirteen million, six hundred three thousand, two hundred fifteen".