213205180 has 24 divisors (see below), whose sum is σ = 458145072. Its totient is φ = 83298432.

The previous prime is 213205169. The next prime is 213205219. The reversal of 213205180 is 81502312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123097 + ... + 124816.

It is an arithmetic number, because the mean of its divisors is an integer number (19089378).

Almost surely, 2^213205180 is an apocalyptic number.

213205180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213205180 is an abundant number, since it is smaller than the sum of its proper divisors (244939892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213205180 is a wasteful number, since it uses less digits than its factorization.

213205180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247965 (or 247963 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 213205180 is about 14601.5471782959. The cubic root of 213205180 is about 597.4009616256.

Adding to 213205180 its reverse (81502312), we get a palindrome (294707492).

The spelling of 213205180 in words is "two hundred thirteen million, two hundred five thousand, one hundred eighty".