63242321 has 2 divisors, whose sum is σ = 63242322. Its totient is φ = 63242320.

The previous prime is 63242251. The next prime is 63242323. The reversal of 63242321 is 12324236.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34939921 + 28302400 = 5911^2 + 5320^2 .

It is a cyclic number.

It is not a de Polignac number, because 63242321 - 2¹⁴ = 63225937 is a prime.

Together with 63242323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63242323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31621160 + 31621161.

It is an arithmetic number, because the mean of its divisors is an integer number (31621161).

Almost surely, 2^63242321 is an apocalyptic number.

It is an amenable number.

63242321 is a deficient number, since it is larger than the sum of its proper divisors (1).

63242321 is an equidigital number, since it uses as much as digits as its factorization.

63242321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 23.

The square root of 63242321 is about 7952.5040710458. The cubic root of 63242321 is about 398.4152316485.

Adding to 63242321 its reverse (12324236), we get a palindrome (75566557).

The spelling of 63242321 in words is "sixty-three million, two hundred forty-two thousand, three hundred twenty-one".