213920355 has 32 divisors (see below), whose sum is σ = 389629440. Its totient is φ = 99207680.

The previous prime is 213920293. The next prime is 213920383. The reversal of 213920355 is 553029312.

It is not a de Polignac number, because 213920355 - 2¹² = 213916259 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 24390 + ... + 31979.

It is an arithmetic number, because the mean of its divisors is an integer number (12175920).

Almost surely, 2^213920355 is an apocalyptic number.

213920355 is a deficient number, since it is larger than the sum of its proper divisors (175709085).

213920355 is a wasteful number, since it uses less digits than its factorization.

213920355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56411.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 213920355 is about 14626.0163749396. The cubic root of 213920355 is about 598.0681896342.

Adding to 213920355 its reverse (553029312), we get a palindrome (766949667).

The spelling of 213920355 in words is "two hundred thirteen million, nine hundred twenty thousand, three hundred fifty-five".