213113333 has 4 divisors (see below), whose sum is σ = 215223468. Its totient is φ = 211003200.

The previous prime is 213113317. The next prime is 213113339. The reversal of 213113333 is 333311312.

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 140232964 + 72880369 = 11842^2 + 8537^2 .

It is a cyclic number.

It is not a de Polignac number, because 213113333 - 2⁴ = 213113317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213113339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054916 + ... + 1055117.

It is an arithmetic number, because the mean of its divisors is an integer number (53805867).

Almost surely, 2^213113333 is an apocalyptic number.

It is an amenable number.

213113333 is a deficient number, since it is larger than the sum of its proper divisors (2110135).

213113333 is a wasteful number, since it uses less digits than its factorization.

213113333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110134.

The product of its digits is 486, while the sum is 20.

The square root of 213113333 is about 14598.4017275865. The cubic root of 213113333 is about 597.3151641994.

Adding to 213113333 its reverse (333311312), we get a palindrome (546424645).

The spelling of 213113333 in words is "two hundred thirteen million, one hundred thirteen thousand, three hundred thirty-three".