213530711 has 4 divisors (see below), whose sum is σ = 214723800. Its totient is φ = 212337624.

The previous prime is 213530701. The next prime is 213530717. The reversal of 213530711 is 117035312.

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 213530711 - 2¹⁸ = 213268567 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 (213530717) 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, 596276 + ... + 596633.

It is an arithmetic number, because the mean of its divisors is an integer number (53680950).

Almost surely, 2^213530711 is an apocalyptic number.

213530711 is a deficient number, since it is larger than the sum of its proper divisors (1193089).

213530711 is a wasteful number, since it uses less digits than its factorization.

213530711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193088.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 213530711 is about 14612.6900671984. The cubic root of 213530711 is about 597.7048529912.

The spelling of 213530711 in words is "two hundred thirteen million, five hundred thirty thousand, seven hundred eleven".