213308871 has 4 divisors (see below), whose sum is σ = 284411832. Its totient is φ = 142205912.

The previous prime is 213308867. The next prime is 213308873. The reversal of 213308871 is 178803312.

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 213308871 - 2² = 213308867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213308873) 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 3 ways as a sum of consecutive naturals, for example, 35551476 + ... + 35551481.

It is an arithmetic number, because the mean of its divisors is an integer number (71102958).

Almost surely, 2^213308871 is an apocalyptic number.

213308871 is a deficient number, since it is larger than the sum of its proper divisors (71102961).

213308871 is an equidigital number, since it uses as much as digits as its factorization.

213308871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71102960.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 213308871 is about 14605.0974320612. The cubic root of 213308871 is about 597.4977933311.

The spelling of 213308871 in words is "two hundred thirteen million, three hundred eight thousand, eight hundred seventy-one".