34211813 has 4 divisors (see below), whose sum is σ = 34223520. Its totient is φ = 34200108.

The previous prime is 34211809. The next prime is 34211843. The reversal of 34211813 is 31811243.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31811243 = 163 ⋅195161.

It is a cyclic number.

It is not a de Polignac number, because 34211813 - 2² = 34211809 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 (34211843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2606 + ... + 8672.

It is an arithmetic number, because the mean of its divisors is an integer number (8555880).

Almost surely, 2^34211813 is an apocalyptic number.

It is an amenable number.

34211813 is a deficient number, since it is larger than the sum of its proper divisors (11707).

34211813 is an equidigital number, since it uses as much as digits as its factorization.

34211813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11706.

The product of its digits is 576, while the sum is 23.

The square root of 34211813 is about 5849.0865098749. The cubic root of 34211813 is about 324.6325250896.

The spelling of 34211813 in words is "thirty-four million, two hundred eleven thousand, eight hundred thirteen".