213441261 has 8 divisors (see below), whose sum is σ = 310460064. Its totient is φ = 129358320.

The previous prime is 213441259. The next prime is 213441287. The reversal of 213441261 is 162144312.

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

It is not a de Polignac number, because 213441261 - 2¹ = 213441259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213441251) 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, 3233926 + ... + 3233991.

It is an arithmetic number, because the mean of its divisors is an integer number (38807508).

Almost surely, 2^213441261 is an apocalyptic number.

It is an amenable number.

213441261 is a deficient number, since it is larger than the sum of its proper divisors (97018803).

213441261 is a wasteful number, since it uses less digits than its factorization.

213441261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6467931.

The product of its digits is 1152, while the sum is 24.

The square root of 213441261 is about 14609.6290507323. The cubic root of 213441261 is about 597.6213799610.

Adding to 213441261 its reverse (162144312), we get a palindrome (375585573).

The spelling of 213441261 in words is "two hundred thirteen million, four hundred forty-one thousand, two hundred sixty-one".