34521213 has 4 divisors (see below), whose sum is σ = 46028288. Its totient is φ = 23014140.

The previous prime is 34521211. The next prime is 34521241. The reversal of 34521213 is 31212543.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31212543 = 3 ⋅10404181.

It is not a de Polignac number, because 34521213 - 2¹ = 34521211 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 34521213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34521211) 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, 5753533 + ... + 5753538.

It is an arithmetic number, because the mean of its divisors is an integer number (11507072).

Almost surely, 2^34521213 is an apocalyptic number.

It is an amenable number.

34521213 is a deficient number, since it is larger than the sum of its proper divisors (11507075).

34521213 is a wasteful number, since it uses less digits than its factorization.

34521213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11507074.

The product of its digits is 720, while the sum is 21.

The square root of 34521213 is about 5875.4755552210. The cubic root of 34521213 is about 325.6082117602.

Adding to 34521213 its reverse (31212543), we get a palindrome (65733756).

The spelling of 34521213 in words is "thirty-four million, five hundred twenty-one thousand, two hundred thirteen".