35318221 has 2 divisors, whose sum is σ = 35318222. Its totient is φ = 35318220.

The previous prime is 35318219. The next prime is 35318233. The reversal of 35318221 is 12281353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19802500 + 15515721 = 4450^2 + 3939^2 .

It is a cyclic number.

It is not a de Polignac number, because 35318221 - 2¹ = 35318219 is a prime.

Together with 35318219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35318281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17659110 + 17659111.

It is an arithmetic number, because the mean of its divisors is an integer number (17659111).

Almost surely, 2^35318221 is an apocalyptic number.

It is an amenable number.

35318221 is a deficient number, since it is larger than the sum of its proper divisors (1).

35318221 is an equidigital number, since it uses as much as digits as its factorization.

35318221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 35318221 is about 5942.9135110651. The cubic root of 35318221 is about 328.0949959080.

Adding to 35318221 its reverse (12281353), we get a palindrome (47599574).

The spelling of 35318221 in words is "thirty-five million, three hundred eighteen thousand, two hundred twenty-one".