215041215 has 16 divisors (see below), whose sum is σ = 351387648. Its totient is φ = 112248096.

The previous prime is 215041207. The next prime is 215041243. The reversal of 215041215 is 512140512.

It is not a de Polignac number, because 215041215 - 2³ = 215041207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215041191 and 215041200.

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, 151807 + ... + 153216.

It is an arithmetic number, because the mean of its divisors is an integer number (21961728).

Almost surely, 2^215041215 is an apocalyptic number.

215041215 is a deficient number, since it is larger than the sum of its proper divisors (136346433).

215041215 is a wasteful number, since it uses less digits than its factorization.

215041215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305078.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 215041215 is about 14664.2836511028. The cubic root of 215041215 is about 599.1109193211.

Adding to 215041215 its reverse (512140512), we get a palindrome (727181727).

It can be divided in two parts, 2150 and 41215, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 215041215 in words is "two hundred fifteen million, forty-one thousand, two hundred fifteen".