213244333 has 4 divisors (see below), whose sum is σ = 213571548. Its totient is φ = 212917120.

The previous prime is 213244331. The next prime is 213244351. The reversal of 213244333 is 333442312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93954249 + 119290084 = 9693^2 + 10922^2 .

It is a cyclic number.

It is not a de Polignac number, because 213244333 - 2¹ = 213244331 is a prime.

It is a super-2 number, since 2×213244333² = 90946291113229778, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213244298 and 213244307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213244331) 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 3 ways as a sum of consecutive naturals, for example, 162628 + ... + 163933.

It is an arithmetic number, because the mean of its divisors is an integer number (53392887).

Almost surely, 2^213244333 is an apocalyptic number.

It is an amenable number.

213244333 is a deficient number, since it is larger than the sum of its proper divisors (327215).

213244333 is an equidigital number, since it uses as much as digits as its factorization.

213244333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327214.

The product of its digits is 5184, while the sum is 25.

The square root of 213244333 is about 14602.8878308367. The cubic root of 213244333 is about 597.4375282922.

Adding to 213244333 its reverse (333442312), we get a palindrome (546686645).

The spelling of 213244333 in words is "two hundred thirteen million, two hundred forty-four thousand, three hundred thirty-three".