215013871 has 2 divisors, whose sum is σ = 215013872. Its totient is φ = 215013870.

The previous prime is 215013847. The next prime is 215013947. The reversal of 215013871 is 178310512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215013871 - 2¹⁵ = 214981103 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215013371) 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 as a sum of consecutive naturals, namely, 107506935 + 107506936.

It is an arithmetic number, because the mean of its divisors is an integer number (107506936).

Almost surely, 2^215013871 is an apocalyptic number.

215013871 is a deficient number, since it is larger than the sum of its proper divisors (1).

215013871 is an equidigital number, since it uses as much as digits as its factorization.

215013871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 215013871 is about 14663.3512881606. The cubic root of 215013871 is about 599.0855245250.

The spelling of 215013871 in words is "two hundred fifteen million, thirteen thousand, eight hundred seventy-one".