215330013 has 6 divisors (see below), whose sum is σ = 311032254. Its totient is φ = 143553336.

The previous prime is 215329993. The next prime is 215330029. The reversal of 215330013 is 310033512.

It can be written as a sum of positive squares in only one way, i.e., 213539769 + 1790244 = 14613^2 + 1338^2 .

It is not a de Polignac number, because 215330013 - 2⁶ = 215329949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215330033) 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 5 ways as a sum of consecutive naturals, for example, 11962770 + ... + 11962787.

It is an arithmetic number, because the mean of its divisors is an integer number (51838709).

Almost surely, 2^215330013 is an apocalyptic number.

It is an amenable number.

215330013 is a deficient number, since it is larger than the sum of its proper divisors (95702241).

215330013 is a wasteful number, since it uses less digits than its factorization.

215330013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23925563 (or 23925560 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 215330013 is about 14674.1273335078. The cubic root of 215330013 is about 599.3789991517.

Adding to 215330013 its reverse (310033512), we get a palindrome (525363525).

The spelling of 215330013 in words is "two hundred fifteen million, three hundred thirty thousand, thirteen".