215328071 has 4 divisors (see below), whose sum is σ = 246089232. Its totient is φ = 184566912.

The previous prime is 215328067. The next prime is 215328079. The reversal of 215328071 is 170823512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 215328071 - 2² = 215328067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215328079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15380570 + ... + 15380583.

It is an arithmetic number, because the mean of its divisors is an integer number (61522308).

Almost surely, 2^215328071 is an apocalyptic number.

215328071 is a deficient number, since it is larger than the sum of its proper divisors (30761161).

215328071 is an equidigital number, since it uses as much as digits as its factorization.

215328071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30761160.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 215328071 is about 14674.0611624731. The cubic root of 215328071 is about 599.3771972701.

The spelling of 215328071 in words is "two hundred fifteen million, three hundred twenty-eight thousand, seventy-one".