213107971 has 16 divisors (see below), whose sum is σ = 239738400. Its totient is φ = 188241408.

The previous prime is 213107929. The next prime is 213108001. The reversal of 213107971 is 179701312.

It is not a de Polignac number, because 213107971 - 2⁹ = 213107459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213107911) 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 in 15 ways as a sum of consecutive naturals, for example, 32181 + ... + 38233.

It is an arithmetic number, because the mean of its divisors is an integer number (14983650).

Almost surely, 2^213107971 is an apocalyptic number.

213107971 is a deficient number, since it is larger than the sum of its proper divisors (26630429).

213107971 is a wasteful number, since it uses less digits than its factorization.

213107971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6198.

The product of its (nonzero) digits is 2646, while the sum is 31.

The square root of 213107971 is about 14598.2180761900. The cubic root of 213107971 is about 597.3101546101.

The spelling of 213107971 in words is "two hundred thirteen million, one hundred seven thousand, nine hundred seventy-one".