1312224241 has 2 divisors, whose sum is σ = 1312224242. Its totient is φ = 1312224240.

The previous prime is 1312224239. The next prime is 1312224247. The reversal of 1312224241 is 1424222131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 742017600 + 570206641 = 27240^2 + 23879^2 .

It is an emirp because it is prime and its reverse (1424222131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312224241 - 2¹ = 1312224239 is a prime.

Together with 1312224239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1312224247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656112120 + 656112121.

It is an arithmetic number, because the mean of its divisors is an integer number (656112121).

Almost surely, 2^1312224241 is an apocalyptic number.

It is an amenable number.

1312224241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312224241 is an equidigital number, since it uses as much as digits as its factorization.

1312224241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 22.

The square root of 1312224241 is about 36224.6358297775. The cubic root of 1312224241 is about 1094.8031007556.

Adding to 1312224241 its reverse (1424222131), we get a palindrome (2736446372).

The spelling of 1312224241 in words is "one billion, three hundred twelve million, two hundred twenty-four thousand, two hundred forty-one".