213346549 has 8 divisors (see below), whose sum is σ = 243273240. Its totient is φ = 185350656.

The previous prime is 213346543. The next prime is 213346561. The reversal of 213346549 is 945643312.

It can be written as a sum of positive squares in 4 ways, for example, as 15944049 + 197402500 = 3993^2 + 14050^2 .

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 213346549 - 2⁵ = 213346517 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 (213346543) 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, 482464 + ... + 482905.

It is an arithmetic number, because the mean of its divisors is an integer number (30409155).

Almost surely, 2^213346549 is an apocalyptic number.

It is an amenable number.

213346549 is a deficient number, since it is larger than the sum of its proper divisors (29926691).

213346549 is a wasteful number, since it uses less digits than its factorization.

213346549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965399.

The product of its digits is 77760, while the sum is 37.

The square root of 213346549 is about 14606.3872672198. The cubic root of 213346549 is about 597.5329711094.

The spelling of 213346549 in words is "two hundred thirteen million, three hundred forty-six thousand, five hundred forty-nine".