461313221 has 2 divisors, whose sum is σ = 461313222. Its totient is φ = 461313220.

The previous prime is 461313191. The next prime is 461313227. The reversal of 461313221 is 122313164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 409617121 + 51696100 = 20239^2 + 7190^2 .

It is a cyclic number.

It is not a de Polignac number, because 461313221 - 2¹⁴ = 461296837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461313227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230656610 + 230656611.

It is an arithmetic number, because the mean of its divisors is an integer number (230656611).

Almost surely, 2^461313221 is an apocalyptic number.

It is an amenable number.

461313221 is a deficient number, since it is larger than the sum of its proper divisors (1).

461313221 is an equidigital number, since it uses as much as digits as its factorization.

461313221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 461313221 is about 21478.2033932077. The cubic root of 461313221 is about 772.6781544331.

Adding to 461313221 its reverse (122313164), we get a palindrome (583626385).

The spelling of 461313221 in words is "four hundred sixty-one million, three hundred thirteen thousand, two hundred twenty-one".