213522707 has 4 divisors (see below), whose sum is σ = 213570240. Its totient is φ = 213475176.

The previous prime is 213522697. The next prime is 213522713. The reversal of 213522707 is 707225312.

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 213522707 - 2⁴ = 213522691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213522707.

It is not an unprimeable number, because it can be changed into a prime (213522767) 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 3 ways as a sum of consecutive naturals, for example, 16232 + ... + 26277.

It is an arithmetic number, because the mean of its divisors is an integer number (53392560).

Almost surely, 2^213522707 is an apocalyptic number.

213522707 is a deficient number, since it is larger than the sum of its proper divisors (47533).

213522707 is an equidigital number, since it uses as much as digits as its factorization.

213522707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47532.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 213522707 is about 14612.4161930873. The cubic root of 213522707 is about 597.6973847612.

It can be divided in two parts, 2135 and 22707, that added together give a palindrome (24842).

The spelling of 213522707 in words is "two hundred thirteen million, five hundred twenty-two thousand, seven hundred seven".