215133117 has 8 divisors (see below), whose sum is σ = 290773824. Its totient is φ = 141457248.

The previous prime is 215133103. The next prime is 215133137. The reversal of 215133117 is 711331512.

It is a happy number.

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

It is not a de Polignac number, because 215133117 - 2¹¹ = 215131069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215133137) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 490953 + ... + 491390.

It is an arithmetic number, because the mean of its divisors is an integer number (36346728).

Almost surely, 2^215133117 is an apocalyptic number.

It is an amenable number.

215133117 is a deficient number, since it is larger than the sum of its proper divisors (75640707).

215133117 is an equidigital number, since it uses as much as digits as its factorization.

215133117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982419.

The product of its digits is 630, while the sum is 24.

The square root of 215133117 is about 14667.4168482388. The cubic root of 215133117 is about 599.1962543579.

Adding to 215133117 its reverse (711331512), we get a palindrome (926464629).

The spelling of 215133117 in words is "two hundred fifteen million, one hundred thirty-three thousand, one hundred seventeen".