213444061 has 8 divisors (see below), whose sum is σ = 230808960. Its totient is φ = 196613568.

The previous prime is 213444041. The next prime is 213444067. The reversal of 213444061 is 160444312.

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

It is not a de Polignac number, because 213444061 - 2⁵ = 213444029 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 (213444067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132771 + ... + 134368.

It is an arithmetic number, because the mean of its divisors is an integer number (28851120).

Almost surely, 2^213444061 is an apocalyptic number.

It is an amenable number.

213444061 is a deficient number, since it is larger than the sum of its proper divisors (17364899).

213444061 is a wasteful number, since it uses less digits than its factorization.

213444061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267203.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 213444061 is about 14609.7248776286. The cubic root of 213444061 is about 597.6239932211.

Adding to 213444061 its reverse (160444312), we get a palindrome (373888373).

The spelling of 213444061 in words is "two hundred thirteen million, four hundred forty-four thousand, sixty-one".