235221361 has 2 divisors, whose sum is σ = 235221362. Its totient is φ = 235221360.

The previous prime is 235221281. The next prime is 235221421. The reversal of 235221361 is 163122532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229340736 + 5880625 = 15144^2 + 2425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-235221361 is a prime.

It is not a weakly prime, because it can be changed into another prime (235221761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117610680 + 117610681.

It is an arithmetic number, because the mean of its divisors is an integer number (117610681).

Almost surely, 2^235221361 is an apocalyptic number.

It is an amenable number.

235221361 is a deficient number, since it is larger than the sum of its proper divisors (1).

235221361 is an equidigital number, since it uses as much as digits as its factorization.

235221361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 235221361 is about 15336.9280170444. The cubic root of 235221361 is about 617.2942801748.

Adding to 235221361 its reverse (163122532), we get a palindrome (398343893).

The spelling of 235221361 in words is "two hundred thirty-five million, two hundred twenty-one thousand, three hundred sixty-one".