34311221 has 6 divisors (see below), whose sum is σ = 39913110. Its totient is φ = 29409576.

The previous prime is 34311163. The next prime is 34311223. The reversal of 34311221 is 12211343.

It can be written as a sum of positive squares in only one way, i.e., 20702500 + 13608721 = 4550^2 + 3689^2 .

It is not a de Polignac number, because 34311221 - 2⁶ = 34311157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34311221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34311223) 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 in 5 ways as a sum of consecutive naturals, for example, 350066 + ... + 350163.

It is an arithmetic number, because the mean of its divisors is an integer number (6652185).

Almost surely, 2^34311221 is an apocalyptic number.

It is an amenable number.

34311221 is a deficient number, since it is larger than the sum of its proper divisors (5601889).

34311221 is an equidigital number, since it uses as much as digits as its factorization.

34311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700243 (or 700236 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 34311221 is about 5857.5780831330. The cubic root of 34311221 is about 324.9466452847.

Adding to 34311221 its reverse (12211343), we get a palindrome (46522564).

The spelling of 34311221 in words is "thirty-four million, three hundred eleven thousand, two hundred twenty-one".