34219813 has 2 divisors, whose sum is σ = 34219814. Its totient is φ = 34219812.

The previous prime is 34219811. The next prime is 34219819. The reversal of 34219813 is 31891243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26193924 + 8025889 = 5118^2 + 2833^2 .

It is a cyclic number.

It is not a de Polignac number, because 34219813 - 2¹ = 34219811 is a prime.

Together with 34219811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34219811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17109906 + 17109907.

It is an arithmetic number, because the mean of its divisors is an integer number (17109907).

Almost surely, 2^34219813 is an apocalyptic number.

It is an amenable number.

34219813 is a deficient number, since it is larger than the sum of its proper divisors (1).

34219813 is an equidigital number, since it uses as much as digits as its factorization.

34219813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 34219813 is about 5849.7703373722. The cubic root of 34219813 is about 324.6578268550.

The spelling of 34219813 in words is "thirty-four million, two hundred nineteen thousand, eight hundred thirteen".