213234233 has 4 divisors (see below), whose sum is σ = 213729408. Its totient is φ = 212739060.

The previous prime is 213234209. The next prime is 213234251. The reversal of 213234233 is 332432312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213234233 - 2¹² = 213230137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213234199 and 213234208.

It is not an unprimeable number, because it can be changed into a prime (213234733) 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, 246941 + ... + 247802.

It is an arithmetic number, because the mean of its divisors is an integer number (53432352).

Almost surely, 2^213234233 is an apocalyptic number.

It is an amenable number.

213234233 is a deficient number, since it is larger than the sum of its proper divisors (495175).

213234233 is an equidigital number, since it uses as much as digits as its factorization.

213234233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495174.

The product of its digits is 2592, while the sum is 23.

The square root of 213234233 is about 14602.5420047333. The cubic root of 213234233 is about 597.4280958973.

Adding to 213234233 its reverse (332432312), we get a palindrome (545666545).

The spelling of 213234233 in words is "two hundred thirteen million, two hundred thirty-four thousand, two hundred thirty-three".