34003721 has 2 divisors, whose sum is σ = 34003722. Its totient is φ = 34003720.

The previous prime is 34003661. The next prime is 34003751. The reversal of 34003721 is 12730043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24393721 + 9610000 = 4939^2 + 3100^2 .

It is a cyclic number.

It is not a de Polignac number, because 34003721 - 2¹⁴ = 33987337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 34003693 and 34003702.

It is not a weakly prime, because it can be changed into another prime (34003751) 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 as a sum of consecutive naturals, namely, 17001860 + 17001861.

It is an arithmetic number, because the mean of its divisors is an integer number (17001861).

Almost surely, 2^34003721 is an apocalyptic number.

It is an amenable number.

34003721 is a deficient number, since it is larger than the sum of its proper divisors (1).

34003721 is an equidigital number, since it uses as much as digits as its factorization.

34003721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 34003721 is about 5831.2709592335. The cubic root of 34003721 is about 323.9729979275.

Adding to 34003721 its reverse (12730043), we get a palindrome (46733764).

The spelling of 34003721 in words is "thirty-four million, three thousand, seven hundred twenty-one".