34220981 has 2 divisors, whose sum is σ = 34220982. Its totient is φ = 34220980.

The previous prime is 34220959. The next prime is 34221001. The reversal of 34220981 is 18902243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23716900 + 10504081 = 4870^2 + 3241^2 .

It is a cyclic number.

It is not a de Polignac number, because 34220981 - 2⁶ = 34220917 is a prime.

It is a super-2 number, since 2×34220981² = 2342151081204722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34220951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17110490 + 17110491.

It is an arithmetic number, because the mean of its divisors is an integer number (17110491).

Almost surely, 2^34220981 is an apocalyptic number.

It is an amenable number.

34220981 is a deficient number, since it is larger than the sum of its proper divisors (1).

34220981 is an equidigital number, since it uses as much as digits as its factorization.

34220981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 34220981 is about 5849.8701694995. The cubic root of 34220981 is about 324.6615205828.

The spelling of 34220981 in words is "thirty-four million, two hundred twenty thousand, nine hundred eighty-one".