215329313 has 2 divisors, whose sum is σ = 215329314. Its totient is φ = 215329312.

The previous prime is 215329271. The next prime is 215329333. The reversal of 215329313 is 313923512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113379904 + 101949409 = 10648^2 + 10097^2 .

It is a cyclic number.

It is not a de Polignac number, because 215329313 - 2¹² = 215325217 is a prime.

It is not a weakly prime, because it can be changed into another prime (215329333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107664656 + 107664657.

It is an arithmetic number, because the mean of its divisors is an integer number (107664657).

Almost surely, 2^215329313 is an apocalyptic number.

It is an amenable number.

215329313 is a deficient number, since it is larger than the sum of its proper divisors (1).

215329313 is an equidigital number, since it uses as much as digits as its factorization.

215329313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 29.

The square root of 215329313 is about 14674.1034819849. The cubic root of 215329313 is about 599.3783496590.

The spelling of 215329313 in words is "two hundred fifteen million, three hundred twenty-nine thousand, three hundred thirteen".