213211234 has 8 divisors (see below), whose sum is σ = 327617388. Its totient is φ = 104005440.

The previous prime is 213211213. The next prime is 213211241. The reversal of 213211234 is 432112312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 144072009 + 69139225 = 12003^2 + 8315^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1299987 + ... + 1300150.

Almost surely, 2^213211234 is an apocalyptic number.

213211234 is a deficient number, since it is larger than the sum of its proper divisors (114406154).

213211234 is a wasteful number, since it uses less digits than its factorization.

213211234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600180.

The product of its digits is 288, while the sum is 19.

The square root of 213211234 is about 14601.7544836228. The cubic root of 213211234 is about 597.4066160085.

Adding to 213211234 its reverse (432112312), we get a palindrome (645323546).

It can be divided in two parts, 2132 and 11234, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 213211234 in words is "two hundred thirteen million, two hundred eleven thousand, two hundred thirty-four".