213333865 has 16 divisors (see below), whose sum is σ = 263088000. Its totient is φ = 165969280.

The previous prime is 213333863. The next prime is 213333899. The reversal of 213333865 is 568333312.

It is not a de Polignac number, because 213333865 - 2¹ = 213333863 is a prime.

It is a super-2 number, since 2×213333865² = 91022675911676450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213333865.

It is not an unprimeable number, because it can be changed into a prime (213333863) 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 15 ways as a sum of consecutive naturals, for example, 69636 + ... + 72634.

It is an arithmetic number, because the mean of its divisors is an integer number (16443000).

Almost surely, 2^213333865 is an apocalyptic number.

It is an amenable number.

213333865 is a deficient number, since it is larger than the sum of its proper divisors (49754135).

213333865 is a wasteful number, since it uses less digits than its factorization.

213333865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392.

The product of its digits is 38880, while the sum is 34.

The square root of 213333865 is about 14605.9530671572. The cubic root of 213333865 is about 597.5211292517.

The spelling of 213333865 in words is "two hundred thirteen million, three hundred thirty-three thousand, eight hundred sixty-five".