213145213 has 8 divisors (see below), whose sum is σ = 215549568. Its totient is φ = 210747504.

The previous prime is 213145199. The next prime is 213145217. The reversal of 213145213 is 312541312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213145213 - 2¹⁷ = 213014141 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 (213145217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90195 + ... + 92527.

It is an arithmetic number, because the mean of its divisors is an integer number (26943696).

Almost surely, 2^213145213 is an apocalyptic number.

It is an amenable number.

213145213 is a deficient number, since it is larger than the sum of its proper divisors (2404355).

213145213 is a wasteful number, since it uses less digits than its factorization.

213145213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323.

The product of its digits is 720, while the sum is 22.

The square root of 213145213 is about 14599.4935871077. The cubic root of 213145213 is about 597.3449471912.

Adding to 213145213 its reverse (312541312), we get a palindrome (525686525).

The spelling of 213145213 in words is "two hundred thirteen million, one hundred forty-five thousand, two hundred thirteen".