213395871 has 16 divisors (see below), whose sum is σ = 310991744. Its totient is φ = 129358944.

The previous prime is 213395843. The next prime is 213395879. The reversal of 213395871 is 178593312.

It is not a de Polignac number, because 213395871 - 2⁹ = 213395359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213395879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38221 + ... + 43446.

It is an arithmetic number, because the mean of its divisors is an integer number (19436984).

Almost surely, 2^213395871 is an apocalyptic number.

213395871 is a deficient number, since it is larger than the sum of its proper divisors (97595873).

213395871 is a wasteful number, since it uses less digits than its factorization.

213395871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81750.

The product of its digits is 45360, while the sum is 39.

The square root of 213395871 is about 14608.0755406042. The cubic root of 213395871 is about 597.5790139608.

The spelling of 213395871 in words is "two hundred thirteen million, three hundred ninety-five thousand, eight hundred seventy-one".