34103981 has 2 divisors, whose sum is σ = 34103982. Its totient is φ = 34103980.

The previous prime is 34103969. The next prime is 34103983. The reversal of 34103981 is 18930143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32959081 + 1144900 = 5741^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 34103981 - 2¹⁸ = 33841837 is a prime.

It is a super-2 number, since 2×34103981² = 2326163040096722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 34103983, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34103983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17051990 + 17051991.

It is an arithmetic number, because the mean of its divisors is an integer number (17051991).

Almost surely, 2^34103981 is an apocalyptic number.

It is an amenable number.

34103981 is a deficient number, since it is larger than the sum of its proper divisors (1).

34103981 is an equidigital number, since it uses as much as digits as its factorization.

34103981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 34103981 is about 5839.8613853413. The cubic root of 34103981 is about 324.2910970460.

The spelling of 34103981 in words is "thirty-four million, one hundred three thousand, nine hundred eighty-one".