1234213213 has 4 divisors (see below), whose sum is σ = 1245536380. Its totient is φ = 1222890048.

The previous prime is 1234213207. The next prime is 1234213223. The reversal of 1234213213 is 3123124321.

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 1115359609 + 118853604 = 33397^2 + 10902^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234213213 - 2¹⁷ = 1234082141 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 (1234213223) 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, 5661420 + ... + 5661637.

It is an arithmetic number, because the mean of its divisors is an integer number (311384095).

Almost surely, 2^1234213213 is an apocalyptic number.

It is an amenable number.

1234213213 is a deficient number, since it is larger than the sum of its proper divisors (11323167).

1234213213 is a wasteful number, since it uses less digits than its factorization.

1234213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11323166.

The product of its digits is 864, while the sum is 22.

The square root of 1234213213 is about 35131.3707816817. The cubic root of 1234213213 is about 1072.6632387375.

Adding to 1234213213 its reverse (3123124321), we get a palindrome (4357337534).

The spelling of 1234213213 in words is "one billion, two hundred thirty-four million, two hundred thirteen thousand, two hundred thirteen".