213434223 has 8 divisors (see below), whose sum is σ = 284791728. Its totient is φ = 142183104.

The previous prime is 213434197. The next prime is 213434237. The reversal of 213434223 is 322434312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213434223 - 2⁶ = 213434159 is a prime.

It is a super-2 number, since 2×213434223² = 91108335095227458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213434193 and 213434202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213434293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21790 + ... + 30027.

It is an arithmetic number, because the mean of its divisors is an integer number (35598966).

Almost surely, 2^213434223 is an apocalyptic number.

213434223 is a deficient number, since it is larger than the sum of its proper divisors (71357505).

213434223 is a wasteful number, since it uses less digits than its factorization.

213434223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53193.

The product of its digits is 3456, while the sum is 24.

The square root of 213434223 is about 14609.3881802080. The cubic root of 213434223 is about 597.6148112444.

Adding to 213434223 its reverse (322434312), we get a palindrome (535868535).

The spelling of 213434223 in words is "two hundred thirteen million, four hundred thirty-four thousand, two hundred twenty-three".