215133243 has 8 divisors (see below), whose sum is σ = 308909328. Its totient is φ = 132389664.

The previous prime is 215133227. The next prime is 215133251. The reversal of 215133243 is 342331512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 215133243 - 2⁴ = 215133227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215133643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2758080 + ... + 2758157.

It is an arithmetic number, because the mean of its divisors is an integer number (38613666).

Almost surely, 2^215133243 is an apocalyptic number.

215133243 is a deficient number, since it is larger than the sum of its proper divisors (93776085).

215133243 is a wasteful number, since it uses less digits than its factorization.

215133243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5516253.

The product of its digits is 2160, while the sum is 24.

The square root of 215133243 is about 14667.4211434730. The cubic root of 215133243 is about 599.1963713377.

Adding to 215133243 its reverse (342331512), we get a palindrome (557464755).

The spelling of 215133243 in words is "two hundred fifteen million, one hundred thirty-three thousand, two hundred forty-three".