213333233 has 4 divisors (see below), whose sum is σ = 214092708. Its totient is φ = 212573760.

The previous prime is 213333223. The next prime is 213333271. The reversal of 213333233 is 332333312.

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 53993104 + 159340129 = 7348^2 + 12623^2 .

It is a cyclic number.

It is not a de Polignac number, because 213333233 - 2⁴ = 213333217 is a prime.

It is a super-2 number, since 2×213333233² = 91022136604464578, 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 = 213333199 and 213333208.

It is not an unprimeable number, because it can be changed into a prime (213333223) 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, 379316 + ... + 379877.

It is an arithmetic number, because the mean of its divisors is an integer number (53523177).

Almost surely, 2^213333233 is an apocalyptic number.

It is an amenable number.

213333233 is a deficient number, since it is larger than the sum of its proper divisors (759475).

213333233 is an equidigital number, since it uses as much as digits as its factorization.

213333233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759474.

The product of its digits is 2916, while the sum is 23.

The square root of 213333233 is about 14605.9314321272. The cubic root of 213333233 is about 597.5205392005.

Adding to 213333233 its reverse (332333312), we get a palindrome (545666545).

The spelling of 213333233 in words is "two hundred thirteen million, three hundred thirty-three thousand, two hundred thirty-three".