213058321 has 12 divisors (see below), whose sum is σ = 254543988. Its totient is φ = 177684192.

The previous prime is 213058301. The next prime is 213058327. The reversal of 213058321 is 123850312.

It can be written as a sum of positive squares in 2 ways, for example, as 114254721 + 98803600 = 10689^2 + 9940^2 .

It is not a de Polignac number, because 213058321 - 2⁵ = 213058289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213058327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56946 + ... + 60571.

It is an arithmetic number, because the mean of its divisors is an integer number (21211999).

Almost surely, 2^213058321 is an apocalyptic number.

It is an amenable number.

213058321 is a deficient number, since it is larger than the sum of its proper divisors (41485667).

213058321 is a wasteful number, since it uses less digits than its factorization.

213058321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117568 (or 117561 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 213058321 is about 14596.5174271125. The cubic root of 213058321 is about 597.2637638026.

The spelling of 213058321 in words is "two hundred thirteen million, fifty-eight thousand, three hundred twenty-one".