213310241 has 4 divisors (see below), whose sum is σ = 213343812. Its totient is φ = 213276672.

The previous prime is 213310231. The next prime is 213310243. The reversal of 213310241 is 142013312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 142683025 + 70627216 = 11945^2 + 8404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213310241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213310243) 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, 4016 + ... + 21041.

It is an arithmetic number, because the mean of its divisors is an integer number (53335953).

Almost surely, 2^213310241 is an apocalyptic number.

It is an amenable number.

213310241 is a deficient number, since it is larger than the sum of its proper divisors (33571).

213310241 is an equidigital number, since it uses as much as digits as its factorization.

213310241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33570.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 213310241 is about 14605.1443334190. The cubic root of 213310241 is about 597.4990724938.

Adding to 213310241 its reverse (142013312), we get a palindrome (355323553).

The spelling of 213310241 in words is "two hundred thirteen million, three hundred ten thousand, two hundred forty-one".