34643381 has 2 divisors, whose sum is σ = 34643382. Its totient is φ = 34643380.

The previous prime is 34643363. The next prime is 34643383. The reversal of 34643381 is 18334643.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33988900 + 654481 = 5830^2 + 809^2 .

It is an emirp because it is prime and its reverse (18334643) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34643381 - 2¹⁰ = 34642357 is a prime.

It is a super-2 number, since 2×34643381² = 2400327694222322, which contains 22 as substring.

Together with 34643383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34643383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17321690 + 17321691.

It is an arithmetic number, because the mean of its divisors is an integer number (17321691).

Almost surely, 2^34643381 is an apocalyptic number.

It is an amenable number.

34643381 is a deficient number, since it is larger than the sum of its proper divisors (1).

34643381 is an equidigital number, since it uses as much as digits as its factorization.

34643381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 34643381 is about 5885.8628084589. The cubic root of 34643381 is about 325.9918606120.

The spelling of 34643381 in words is "thirty-four million, six hundred forty-three thousand, three hundred eighty-one".