213712071 has 16 divisors (see below), whose sum is σ = 288524544. Its totient is φ = 140698944.

The previous prime is 213712069. The next prime is 213712073. The reversal of 213712071 is 170217312.

It is an interprime number because it is at equal distance from previous prime (213712069) and next prime (213712073).

It is not a de Polignac number, because 213712071 - 2¹ = 213712069 is a prime.

It is a super-2 number, since 2×213712071² = 91345698582218082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213712073) 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, 80355 + ... + 82971.

It is an arithmetic number, because the mean of its divisors is an integer number (18032784).

Almost surely, 2^213712071 is an apocalyptic number.

213712071 is a deficient number, since it is larger than the sum of its proper divisors (74812473).

213712071 is a wasteful number, since it uses less digits than its factorization.

213712071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2950.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 213712071 is about 14618.8943152347. The cubic root of 213712071 is about 597.8740231568.

Adding to 213712071 its reverse (170217312), we get a palindrome (383929383).

The spelling of 213712071 in words is "two hundred thirteen million, seven hundred twelve thousand, seventy-one".