213000230321 has 8 divisors (see below), whose sum is σ = 225539142984. Its totient is φ = 200462371840.

The previous prime is 213000230273. The next prime is 213000230353. The reversal of 213000230321 is 123032000312.

It can be written as a sum of positive squares in 4 ways, for example, as 24178695025 + 188821535296 = 155495^2 + 434536^2 .

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 213000230321 - 2²² = 212996036017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 213000230321.

It is not an unprimeable number, because it can be changed into a prime (213000230621) 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, 173141 + ... + 675261.

It is an arithmetic number, because the mean of its divisors is an integer number (28192392873).

Almost surely, 2^213000230321 is an apocalyptic number.

It is an amenable number.

213000230321 is a deficient number, since it is larger than the sum of its proper divisors (12538912663).

213000230321 is a wasteful number, since it uses less digits than its factorization.

213000230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527091.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 213000230321 its reverse (123032000312), we get a palindrome (336032230633).

The spelling of 213000230321 in words is "two hundred thirteen billion, two hundred thirty thousand, three hundred twenty-one".