215133215 has 16 divisors (see below), whose sum is σ = 298196640. Its totient is φ = 147256320.

The previous prime is 215133197. The next prime is 215133227. The reversal of 215133215 is 512331512.

It is a happy number.

It is not a de Polignac number, because 215133215 - 2⁶ = 215133151 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114110 + ... + 115979.

It is an arithmetic number, because the mean of its divisors is an integer number (18637290).

Almost surely, 2^215133215 is an apocalyptic number.

215133215 is a deficient number, since it is larger than the sum of its proper divisors (83063425).

215133215 is a wasteful number, since it uses less digits than its factorization.

215133215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230122.

The product of its digits is 900, while the sum is 23.

The square root of 215133215 is about 14667.4201889767. The cubic root of 215133215 is about 599.1963453422.

Adding to 215133215 its reverse (512331512), we get a palindrome (727464727).

The spelling of 215133215 in words is "two hundred fifteen million, one hundred thirty-three thousand, two hundred fifteen".